IN THE UNITED STATES COURT OF APPEALS
                    FOR THE FIFTH CIRCUIT United States Court of Appeals
                                                   Fifth Circuit

                                                                            FILED
                                                                           April 11, 2008

                                     No. 07-60116                     Charles R. Fulbruge III
                                   Summary Calendar                           Clerk


UNITED STATES OF AMERICA

                                                  Plaintiff - Appellee
v.

JERRY E JACKSON

                                                  Defendant - Appellant



                  Appeals from the United States District Court
                     for the Southern District of Mississippi
                                  3:06-CR-94-1


Before WIENER, GARZA, and BENAVIDES, Circuit Judges.
PER CURIAM:*
       Jerry E. Jackson (“Jackson”) was ticketed on the Natchez Trace Parkway
by United States Park Service Ranger Jerome Timmons on November 5, 2005,
for operating a motor vehicle under the influence of alcohol. See 36 C.F.R. §
4.23(a)(2) (stating that operation of a motor vehicle is “prohibited while . . . the
alcohol concentration in the operator’s. . . breath is 0.08 grams or more of
alcohol . . . per 210 liters of breath”). Jackson pleaded not guilty to this offense


       *
         Pursuant to 5TH CIR. R. 47.5, the court has determined that this opinion should not
be published and is not precedent except under the limited circumstances set forth in 5TH CIR.
R. 47.5.4.
                                           No. 07-60116

and proceeded to trial before a magistrate judge (“MJ”). The government’s case
relied on the testimony of Ranger Timmons and the results of a breathalyzer test
conducted by Timmons using an Intoxilyzer 8000 machine, which showed
Jackson’s breath alcohol level to be above the legal limit. Jackson did not move
to exclude the Intoxilyzer’s test results. At the close of the government’s
evidence, Jackson moved for acquittal under Rule 29. See FED. R. CRIM. P. 29.
Jackson did not present any evidence of his own at trial. Jackson argued that
the Intoxilyzer results, and Ranger Timmons’ testimony were not sufficient to
establish his guilt beyond a reasonable doubt. The MJ denied the motion and
found Jackson guilty based solely on the results of the Intoxilyzer, and the
testimony of Ranger Timmons related to the Intoxilyzer testing.1 Jackson
appealed his conviction to the district court. The district court affirmed,
applying the same standard we apply here. See United States v. Jackson, 

. 654 (S.D. Miss. 2007). Jackson now appeals the district court’s
judgment, arguing again that the test results and Ranger Timmons’ testimony
regarding the Intoxilyzer are insufficient to support his conviction.
       Jackson moved for acquittal at the close of the government’s evidence,
which was the close of all evidence. In this circumstance, we review a sufficiency
challenge de novo, asking whether a rational trier of fact “could have found the
defendant guilty beyond a reasonable doubt.” United States v. Mitchell, 

, 768 (5th Cir. 2007); see Jackson v. Virginia, 

, 319 (1979). “The
evidence . . . must be considered in the light most favorable to the government,
giving the government the benefit of all reasonable inferences and credibility


       1
          Ranger Timmons also testified as to his observations when Jackson exited his vehicle and
testified as to Jackson’s failure to satisfactorily complete field sobriety tests. According to Timmons,
these confirmed his belief that Jackson was intoxicated. Jackson also admitted to consuming a quart
of “King Cobra” within the preceding five hours, and to having “a few sips” of alcohol from the open
container that his wife had in the vehicle. However, the MJ did not consider Timmons’ observations in
finding Jackson guilty. Instead, the MJ stated that he would rely solely on the testimony concerning
the Intoxilyzer test and its results in determining Jackson’s guilt.

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choices.” United States v. Inocencio, 

, 724 (5th Cir. 1994). “It is not
necessary that the evidence exclude every reasonable hypothesis of innocence.”
United States v. Espinoza-Seanez, 

, 536 (5th Cir. 1988).
         Under 36 C.F.R. § 4.23(a)(2), the government must prove that Jackson was
operating a motor vehicle while his breath alcohol concentration was 0.08 grams
or more of alcohol per 210 liters of breath. The regulation further states that
tests done for the presence of alcohol “shall be determined by and administered
at the direction of an authorized person.” 36 C.F.R. § 4.23(c)(3). “Any test shall
be conducted by using accepted scientific methods and equipment of proven
accuracy and reliability operated by personnel certified in its use.” 

Ranger Timmons testified that he received formal training in the operation of
the Intoxilyzer 8000 and that he had been administering tests using the machine
for approximately eight months. Timmons testified that a Mississippi State
Trooper manually checks the machines used by the Park Rangers on a monthly
basis.     Timmons also testified that the Intoxilyzer 8000 contains a self-
calibration check which runs before and after each breathalyzer test is
administered. According to Timmons’ testimony, this is an improvement over
the 5000-model which required manual calibration. If the Intoxilyzer detects an
error during the self-calibration check, the machine will not function. Timmons
testified that the Intoxilyzer 8000 performed the self-calibration checks and
functioned as expected when he tested Jackson’s breath alcohol content.
Consistent with standard operating procedure, Ranger Timmons was required
to wait twenty five minutes before testing Jackson))the machine is pre-
programmed to require this observation time before it will allow an officer to
administer the test. Timmons had Jackson blow twice on the Intoxylizer.
Jackson’s first breath sample registered 0.099, and his second 0.084, both above
the legal limit.



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      On cross-examination, Timmons admitted that during his training he was
told that the Intoxilyzer had a margin of error, but he could not recall the
margin of error. He also stated that he was not aware of the last time that his
machine was checked by a State Trooper, although the norm was once a month.
On appeal, Jackson argues that Timmons’ lack of knowledge as to the last
manual calibration of his machine, and his lack of knowledge concerning the
Intoxilyzer’s margin of error, sufficiently undermine the reliability of the
Intoxilyzer results such that a rational fact finder would have a reasonable
doubt as to Jackson’s guilt.
      Based on the evidence at Jackson’s trial, we affirm his conviction.
Timmons’ testimony established that he was “authorized” and “certified” to
operate the Intoxilyzer 8000. 36 C.F.R. § 4.23(c)(3) and (4). The test results
admitted at trial were the result of “accepted scientific methods and equipment
of proven accuracy and reliability.” 36 C.F.R. § 4.23(c)(4); see, e.g., California v.
Trombetta, 

, 489 n. 9 (1984) (recognizing that accuracy of Intoxilyzer
has been certified by the National Highway Traffic Safety Administration);
United States v. Brannon, 

, 1196 (9th Cir. 1998) (same); United
States v. Reid, 

, 994 (4th Cir. 1991) (stating that breathalyzer is the
“best means for obtaining evidence of the breath alcohol content”); Volk v. United
States, 

, 897 (N.D. Cal. 1999) (“The methodology of the
Intoxilyzer has achieved wide acceptance within the scientific community.”).
Timmons’ testimony established that the Intoxilyzer 8000 runs automatic
calibration checks before and after each test, disabling the machine if anything
is wrong, and that the machines used by the Park Rangers were manually
checked on a monthly basis by the Mississippi State Troopers. Both breath
samples provided by Jackson registered levels above the legal limit.            The
evidence produced at Jackson’s trial, when taken in the light most favorable to
the verdict, provides the necessary support for a rational trier of fact to find

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Jackson guilty beyond a reasonable doubt. Timmons’ inability to recall the
machine’s specific margin of error, or the time when his particular machine was
last manually checked do not lead us to overturn the verdict reached by the
magistrate judge.
      Accordingly, we AFFIRM the judgment of the district court.




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