Defendant Phillip La Cock was indicted on three counts stemming from his possession of a "destructive device" as defined in 26 U.S.C. § 5845(f). He moved to dismiss the indictment on the ground that his device was a homemade intruder alarm that fell outside the definition of the statute. After hearing testimony from experts on both sides, the district court granted Defendant's motion. The Government timely appealed. For the reasons that follow, we take jurisdiction pursuant to 18 U.S.C. § 3731 and 28 U.S.C. § 1291, conclude that the district court erroneously dismissed the indictment, REVERSE the dismissal of the indictment and REMAND for further proceedings consistent with this opinion.

On December 1, 1998, police officers executed a search warrant at the home of Defendant-Appellee Phillip La Cock ("Defendant") in Roswell, New Mexico. They were looking for kitchenware and other items that Defendant had allegedly stolen from a local hotel. While in Defendant's bedroom, the officers discovered a small metal box that was 11 inches high, 12.5 inches wide and 10 inches deep. On top of the box was written, "Danger Do Not Open." Seeing this, the officers called the bomb squad to disarm the box, which they did successfully.

The inside of the box contained a metal divider that separated its interior into two compartments, one slightly larger than the other. In the larger compartment were three rounded river rocks that weighed about 18 pounds. In the smaller compartment were approximately 80 grams of Pyrodex powder scattered around the bottom.2 Mixed in with the Pyrodex powder were 26 Black Cat firecrackers and some wooden matches. An initiator for the device was attached to the divider on the side of the compartment containing the Pyrodex and the firecrackers. The initiator consisted of a small cylinder of duct tape that was lined with strike pads torn from matchbooks. At the bottom of the cylinder were three wooden matches with a cluster of match heads ("the match device") glued to them. The three matches were bound together with a wire that was also attached to the lid of the box. The initiator was designed such that when the lid of the box was opened, the wire would pull the match device through the cylinder and along the strike pads, causing the match device to ignite. The resulting flame would ignite the Pyrodex power, which in turn would light the firecrackers.

For his possession of the device, Defendant was charged, in a three-count superseding indictment, with manufacturing a destructive device, in violation of 26 U.S.C. §§ 5822, 5861(f), and 5871; possessing an unregistered destructive device, in violation of 26 U.S.C. §§ 5841, 5861(d), and 5871; and using explosive material to commit a felony (specifically, the manufacture of a destructive device), in violation of 18 U.S.C. § 844(h). All of the charges thus turn on whether the Defendant's device is a "destructive device" as defined in 26 U.S.C. § 5845(f). That statute defines "destructive device" as follows:

The term "destructive device" means (1) any explosive, incendiary, or poison gas (A) bomb, (B) grenade, (C) rocket having a propellent charge of more than four ounces, (D) missile having an explosive or incendiary charge of more than one-quarter ounce, (E) mine, or (F) similar device; (2) any type of weapon by whatever name known which will, or which may be readily converted to, expel a projectile by the action of an explosive or other propellant, the barrel or barrels of which have a bore of more than one-half inch in diameter, except a shotgun or shotgun shell which the Secretary finds is generally recognized as particularly suitable for sporting purposes; and (3) any combination of parts either designed or intended for use in converting any device into a destructive device as defined in subparagraphs (1) and (2) and from which a destructive device may be readily assembled. The term "destructive device" shall not include any device which is neither designed nor redesigned for use as a weapon; any device, although originally designed for use as a weapon, which is redesigned for use as a signaling, pyrotechnic, line throwing, safety, or similar device; surplus ordnance sold, loaned, or given by the Secretary of the Army pursuant to the provisions of section 4684(2), 4685, or 4686 of title 10 of the United States Code; or any other device which the Secretary finds is not likely to be used as a weapon, or is an antique or is a rifle which the owner intends to use solely for sporting purposes.

Id. (emphasis added).

Defendant moved to dismiss the indictment, arguing that 1) the statute was unconstitutionally vague as applied to his case; 2) his device was simply an improvised intruder alarm and not designed as a weapon; and 3) his device was not a "destructive device" because it would not explode. He argued in the motion that his device was usually kept on a table near the back entrance to his house.3 It was intentionally placed there, Defendant said, to get the attention of anyone who broke into his home, which had been burglarized several times previously. If the lid were removed quickly enough, the box was meant to send up a brief flash of light, a cloud of smoke, and noise from the firecrackers. The noise and light, said Defendant, were intended to alert his neighbors to the intruder's presence and presumably scare the intruder away.4

On July 23, 2002, the district court held a hearing on the motion to dismiss the indictment, and both parties introduced exhibits and expert testimony.5 Defendant's expert, Nelson Welch, testified that he had conducted experiments using a device similar to the one found in Defendant's home. He testified that he could not determine whether Defendant's device actually would have worked, but that if it had, the Pyrodex would have burned, not exploded. He stated that the only way that black powder can "cause any kind of damage is if it is confined, compressed, held together." In Defendant's device, however, the powder was only loosely scattered at the bottom of the box. Welch said that he did not think that the device was intended as a weapon. But on cross-examination, Welch acknowledged that the flames that shot up from the device could injure someone "[i]f their face was directly over the box."

The Government called three expert witnesses. Michael Davies, a member of the bomb squad that disarmed the device, called it an "incendiary type of device which was an improvised explosive device" and that "the initiator was not electrical and that it was of a booby-trap, victim-related type of device." He believed that the device would function as designed.

Bradley Cooper, a forensic chemist for the Bureau of Alcohol, Tobacco, and Firearms (ATF), testified that Pyrodex is "considered an explosive material" because it is "a chemically unstable material that will react and with great rapidity, with great speed. It would deflagrate, burn very, very quickly, and would give out large amounts of gas, heat, energy, and that would put it into the explosives classification." He characterized Pyrodex as a "low explosive" (as opposed to TNT, a high explosive), because it would deflagrate, or burn up very rapidly. On cross-examination, Cooper acknowledged that the Pyrodex "would need to be confined to have any type of explosive property," such as being "piled up in a pile" in significant (but unspecified) amounts.

The Government's last expert witness was Brian Hart, an ATF explosives enforcement officer, who testified about what constitutes a "destructive device" under 26 U.S.C. § 5845(f). To fit within the definition, "there must be a main charge explosive or incendiary or poisonous gas ... a means of confinement and a means of initiation. If those three components are in a device, along with if it is designed as a weapon, it is a destructive device." Hart testified that Defendant's device was a "destructive device" because it contained all three components. He said that it could be characterized as either an "explosive" or "incendiary" bomb — the former because it "had explosive material in it," and the latter because it would "deflagrate" but not explode. Hart said that "[b]y design it is a weapon" and called it a "booby trap."

The hearing concluded at the end of Hart's testimony. In a written disposition entered on August 12, 2002, the district court granted Defendant's motion to dismiss the indictment, on the grounds that the device was not designed as a weapon and was not a "bomb" because it would not explode.6

The court first resolved in Defendant's favor the conflict between the government's characterization of the device as a booby trap and Defendant's characterization of it as an intruder alarm. Although, noted the court, "the flame [from the device] may have some potential to cause harm,"

... the device is by no means clearly designed for that purpose. The box cannot expel projectiles. The box is constructed to emit noise, light, and smoke. Viewed objectively, this admittedly "unique device" was not designed to be a weapon, but rather a signaling device in the form of an alarm as Defendant asserts. Thus, by definition the device cannot be a destructive device.

Second, the court stated that even if the box were assumed to be a weapon, "the Government would still have to overcome Defendant's second argument that, without explosive capabilities, the box is not a destructive device." All of the experts agreed, said the court, that the Pyrodex powder would not explode, but only deflagrate. The court then stated that to fall within the statutory definition of "destructive device," a device must have explosive capabilities — not simply incendiary capabilities. "`If Congress had7 intended to cover any dangerous incendiary [under Section 5845(f)(1)], it could have done so.... But it did not do so, and, until it does, we must read the word `bomb' so that it retains some sensible meaning'" (quoting United States v. Podolsky, 625 F. Supp. 188, 199 n. 13 (N.D.Ill.1985)) (alterations in original). The district court concluded that because Defendant's device was "incendiary in nature and incapable of exploding [,] it is not a destructive device within the meaning of 26 U.S.C. [§] 5845(f)(1)." Accordingly, because all of the charged counts rested on Defendant's possession of a "destructive device," the court dismissed the superseding indictment in its entirety. The Government timely appealed.8

"As a general rule, `in reviewing a trial court's order granting or denying a motion to dismiss an indictment, the appellate court can only reverse if the lower court abused its discretion.'" United States v. Wood, 6 F.3d 692, 694 (10th Cir.1993) (quoting United States v. Strayer, 846 F.2d 1262, 1265 (10th Cir.1988)). "However, if, as here, the court dismisses the indictment based on its interpretation of the governing statutes, that is a legal determination we review de novo." Id. (citing Tramp v. United States, 978 F.2d 1055, 1055 (8th Cir.1992)). Because the district court's dismissal was based on the legal determination that Defendant's device was not covered by 26 U.S.C. § 5845(f), our review of that conclusion is de novo. For the reasons that follow, we find that the district court's conclusion was erroneous and that the indictment should not have been dismissed.

Under § 5845(f)(1), a destructive device includes "any ... explosive [or] incendiary ... bomb ... or similar device." The district court determined that Defendant's device fell outside that definition because it was "incendiary and incapable of exploding" and therefore was not a "bomb." That determination was erroneous.

By suggesting that to constitute a "bomb," a device must explode, the district court's interpretation read the word "incendiary" out of the statute. In so doing, the court violated "a cardinal principle of statutory construction that a statute ought, upon the whole, to be so construed that, if it can be prevented, no clause, sentence, or word shall be superfluous, void, or insignificant." TRW Inc. v. Andrews, 534 U.S. 19, 31, 122 S. Ct. 441, 151 L. Ed. 2d 339 (2001) (internal quotations and citations omitted). The word "incendiary" in the statute "cannot be regarded as mere surplusage; it means something." Potter v. United States, 155 U.S. 438, 446, 15 S. Ct. 144, 39 L. Ed. 214 (1894). And where, as here, the language of a statute is "clear and unambiguous, then the plain meaning of the words must be given effect." Resolution Trust Corp. v. Love, 36 F.3d 972, 976 (10th Cir.1994).

Defendant's device was designed, upon activation, to shoot a six-foot-high flame into the air and in the process "give out large amounts of gas, heat, [and] energy."9 That seems clearly to be an "incendiary bomb" or "similar device" under § 5845(f). In the flame-producing manner of its operation, the device is similar to a Molotov cocktail or other types of firebombs that have been held to constitute "incendiary bombs," even though they do not explode. See, e.g., United States v. Simmons, 83 F.3d 686, 687 (4th Cir.1996) ("[C]ourts have uniformly held that a fully-assembled Molotov cocktail — defined as a device comprising a bottle, gasoline, and a rag — constitutes an `incendiary ... bomb' or `similar device' under section 5845(f).") (citing cases); United States v. Ragusa, 664 F.2d 696, 697, 699-700 (8th Cir.1981) (finding that a device consisting of "six trash bags, each holding a five-gallon container of gasoline, suspended in various locations and connected by overlapping paper towels trailing throughout the house" qualified as an incendiary bomb under § 5845(f)).

We conclude, therefore, that the district court erred when it dismissed the indictment after determining that Defendant's device was not an "incendiary bomb" simply because it did not explode.

We now turn to the other ground on which the district court dismissed the indictment — its conclusion that the device, although it "may have some potential to cause harm," was not "designed to be a weapon, but rather a signaling device in the form of an alarm as Defendant asserts." Because § 5845(f) specifically excludes devices "neither designed nor redesigned" for use as weapons, the district court concluded that Defendant's device fell outside the terms of the statute. The district court may indeed have been correct to so conclude. However, that determination is not ours to make, nor was it the district court's. Along with several other circuits, we have previously held that the determination as to whether a device was "designed [or] redesigned for use as a weapon" is an affirmative defense, not an element of the crime that must be alleged in the indictment. See United States v. Neal, 692 F.2d 1296, 1303 (10th Cir.1982); see also United States v. Johnson, 152 F.3d 618, 623 (7th Cir.1998); United States v. Posnjak, 457 F.2d 1110, 1116 (2d Cir.1972); United States v. Oba, 448 F.2d 892, 894 (9th Cir.1971). As a contested affirmative defense, Defendant's argument that the device was not designed as a weapon should be resolved at trial, not during a motion to dismiss the indictment. It was error for the court to dismiss the indictment on this ground.

For the foregoing reasons, we REVERSE the district court's dismissal of the indictment and REMAND for further proceedings consistent with this opinion.