This appeal is from judgments entered by the United States District Court for the Eastern District of Arkansas arising out of a collision between a privately owned automobile and a United States Navy truck on Interstate Highway No. 40 on the outskirts of North Little Rock, Arkansas. The automobile was being driven by Reverend Maddux with his wife as a passenger, and the Navy truck by James Melton with John Cox as a passenger. Melton and Cox were Navy servicemen on official Navy business when the truck rearended the Maddux automobile, causing Mrs. Maddux to lose her life without regaining consciousness and causing serious injuries to Maddux and Cox and minor injuries to Melton.

This case originated in state court when Cox sued Maddux for his personal injuries. Maddux answered and counterclaimed against Cox and impleaded Melton by third party complaint. Pursuant to 28 U.S.C. 2679, the United States removed the action to the United States District Court and substituted itself for Melton and Cox insofar as Maddux' claims were based on negligent driving. The United States also cross-claimed against Maddux for damages to its truck and, pursuant to 42 U.S.C. 2651, et seq., for the medical care it provided Cox. Maddux then intervened in behalf of the estate of his deceased wife to recover her medical and funeral expenses, and also in behalf of her next of kin to recover damages for mental anguish which they suffered as a result of decedent's death.

The case was tried to the court whose Findings of Fact and Conclusions of Law as well as a more detailed statement of the facts are contained in a memorandum opinion published at 255 F. Supp. 517. The court found that Maddux, driver of the automobile, and Melton, driver of the Navy truck, were guilty of negligence in an equal degree combining to constitute the proximate cause of the collision; that the drivers' negligence was not imputable to the occupants of the vehicles; that Maddux was not entitled to contribution from the Government on a judgment rendered against him favoring Cox; that the Government was not entitled to contribution from Maddux individually with respect to its liability for the death of Mrs. Maddux; and that the Government was entitled to compensation for expense it incurred in furnishing medical care to passenger Cox as his subrogee under 42 U.S.C. 2651. The Government has not appealed from judgments adverse to it, and we are concerned here solely with the appeal of Maddux.

It is first contended that the court erred in finding negligence on the part of Maddux. Unfortunately, Maddux sustained brain injuries which resulted in retrograde amnesia and he was unable to recall any of the events immediately prior to the accident or at the time thereof. Aside from the testimony of Melton and Cox, the driver and occupant of the Navy truck, there was no eyewitness testimony, and the testimony of the two servicemen combined with the physical facts and inferences that might be drawn therefrom constitute the whole of the evidence on negligence in the case.

The accident happened at approximately 8:00 a.m. on August 21, 1965 on the extreme left or northern lane of a three-lane eastward segment of a concrete interstate highway with wide paved shoulders on either side and a grass median separating the eastbound highway from its westbound counterpary. The posted speed limits were 70 m.p.h. maximum and 45 m.p.h. minimum. It was a bright, sunshiny day and there was very little traffic. There is no question about the negligence of Melton, the driver of the Navy truck, because of his complete failure to keep a proper lookout. According to his own testimony, he was traveling at the rate of sixty-two miles per hour and did not even see the Maddux automobile until the instant of collision although the road was straight and level and the visibility unlimited. Melton and Cox testified that the Maddux car was going very solw or else was stopped, and it was their impression that the Maddux car had been driven from the shoulder directly in front of the Navy truck.

Shortly after the accident, the state police arrived on the scene as did Navy personnel and a number of pictures were taken. It was Maddux' theory that his car was in the process of being steered off the highway onto the paved shoulder when it was suddenly struck. This theory was substantiated by the physical of the state police based on the physical evidence, but their opinion was sharply contradicted, all of which led the court to express its dissatisfaction with the evidence of the state police as well as the inferences drawn by the Government witnesses from the same exhibits depicting the physical facts. The trial court's expressions of dissatisfaction with the evidence and the statement contained in the memorandum opinion that it would be speculation to undertake to say just where the Maddux car was when struck or at what angle it was headed prior to the time the driver of the Navy truck observed it, constitute the premise upon which it is asserted by Maddux that the court's ultimate finding of negligence on his part was erroneous.

The court rejected the theory of Maddux that his car was struck as it was proceeding slowly and about to turn onto the highway shoulder and also rejected the Government's theory that Maddux had previously driven upon the shoulder and was returning to the highway proper when the collision occurred. In this regard, the court said:

'The Court thinks that it would be pure speculation to undertake to say just where the Maddux car was, or what it was doing, or at what angle it was headed prior to the time Melton observed it. The most that can be said is that the Maddux vehicle was in fact in the left hand traffic lane immediately adjacent to the shoulder when the impact occurred.' Cox v. Maddux, supra at 522. However, the court held as follows: 'If Maddux was proceeding down the highway and had never turned from it prior to the collision, he was negligent in failing to keep a proper lookout and in going too slow.'1 Cox v. Maddux, supra at 523.

The court found that Maddux was negligent both in failing to keep a proper lookout and in driving too slow.2 However, finding only that the Maddux car was in the left traffic lane when the impact occurred effectively discredits all evidence respecting its operation except its slow speed and is not reconcilable with a finding that Maddux was guilty of negligence in failing to keep a proper lookout. We, therefore, set aside the trial court's finding that Maddux was negligent in failing to keep a proper lookout.

Since we conclude that under the credited testimony there is a complete absence of evidence of Maddux' failure to keep a proper lookout, the District Court will on reexamination necessarily have to determine whether Maddux' negligence in driving slow under the circumstances constituted a proximate cause of the collision and, if so, the degree of same when compared with the negligence of Melton.3

We find no merit in the assignment of error based on the court's failure to consider Melton's admissions made to state police officers after the collision as substantive evidence of negligence on the part of Cox. Maddux in his brief concedes that the statements made by Melton are the only evidence indicating negligence on Cox' part. It is asserted that such evidence was admissible and binding on Cox as a vicarious admission made by Melton and was a res gestae statement.4

The Arkansas court has on many occasions held that such statements are not a part of the res gestae and not admissible as substantive evidence of negligence but competent only for the purpose of contradicting the maker as a witness in the case. See Williams v. Martin, 226 Ark. 431, 290 S.W.2d 442, 444-445 (1956), and cases therein cited. Both the Williams case, supra, and Itzkowitz witz v. P. H. Reubel & Co., 158 Ark. 454, 250 S.W. 535, 537 (1923), dealt with statements made by the driver to investigating officers shortly after a collision. In Itzkowitz, supra, the police officer was only a half block from the scene of the accident when he heard the noise of the collision and ran to the place where it occurred. He there talked to the driver of one of the vehicles. The Arkansas court stated:

'We are of the opinion that the statements and declarations of the driver, as testified to by the police officer, were not part of the res gestae, and that they were not competent evidence in the case, except for the purpose of contradiction.' 250 S.W. at 536.

The court properly, we think, found Cox free of negligence.

The trial court awarded the Government judgment against Maddux for its expenses incurred for hospital and medical services rendered serviceman Cox pursuant to the Federal Medical Care Recovery Act.5

This statute, primarily a fiscal measure, was enacted by the Congress following the Supreme Court decision in United States v. Standard Oil Co. of Cal., 332 U.S. 301, 67 S. Ct. 1604, 91 L. Ed. 2067 (1947), which decision pointed up the necessity for congressional action if the Government was to be afforded a right of recovery for such medical costs. The measure was enacted after a consideration by the Congress of several bills designed to enable the Government to recoup its medical costs thus expended.6 In its original form the bill dealt only with 'subrogation' and 'assignment' rights of the Government but was amended in the House Judiciary Committee to incorporate the section with which we are concerned. As amended, it provided the additional independent remedy of the Government ant the object was to immunize the Government from restrictive local laws in some states, as, for example, such local laws as preclude a recovery for medical expenses covered by insurance. Resort need not be had to the legislative history to ascertain the meaning of this statute. Its plain language creates a right of recovery in the Government 'under circumstances creating a tort liability upon some third person (other than or in addition to the United States * * *)'. The Act additionally subrogates the Government to any such rights the injured serviceman may have for medical expenses. Here Cox, the serviceman, had no cause of action against the Government. His sole action was against Maddux. Insofar as his medical expenses are concerned, the Government was subrogated to Cox' right to recover. Since this ground for recovery is bottomed solely on Maddux' negligence, the Government's rights thus subrogated are not affected by the negligence of Melton, another serviceman. To hold otherwise would certainly create a windfall for Maddux to which he is not entitled.

We also agree with the court's holding that the Government would not be liable to Maddux by way of contribution for any damages he might have to pay to Cox. Feres v. United States, 340 U.S. 135, 71 S. Ct. 153, 95 L. Ed. 152 (1950), teaches that the United States is not liable in tort action for injuries to servicemen that arise out of or in the course of activity incident to the service. United States v. Carroll, 369 F.2d 618 (8th Cir. 1966); Chambers v. United States, 357 F.2d 224 (8th Cir. 1966); United States v. United Services Automobile Ass'n, 238 F.2d 364 (8th Cir. 1956).

In Troutman v. Modlin, 353 F.2d 382, 386 (8th Cir. 1965), involving an Arkansas case, we said:

'The right to contribution among joint tortfeasors is based upon a common liability to an injured party. (Citing cases.) This common liability may be either joint or several, but, in order for there to be a right to contribution, the injured party must have a possible remedy against both the party seeking contribution and the party from whom contribution is sought.'

Since the United States has no liability in tort to Cox, it cannot be held liable in contribution for his injuries. Wien Alaska Airlines, Inc. v. United States, 375 F.2d 736 (9th Cir. 1967); United Air Lines, Inc. v. Wiener, 335 F.2d 379 (9th Cir. 1964).

We reverse for reexamination by the District Court of Maddux' negligence, its extent or degree, based solely on his driving slowly upon a highway with a forty-five miles per hour minimum speed limit. Nothing that we have said heretofore is intended to infer any restriction on the District Court's right to find that said negligence was actionable. It is primarily the District Court's function to make findings of negligence and the degree thereof. It is obvious from what has been said that we would have affirmed the judgments in favor of Maddux, as Executor, for the benefit of the estate and the children, but the Government did not appeal from any judgments adverse to it. Cox, of course, is entitled to full recovery against Maddux in the event Maddux' negligence is found to be actionable. The other judgments, including Maddux' right to recover for his personal injuries, will be affected by the District Court's determination in the event it finds Maddux guilty of actionable negligence in a lesser degree than Melton.

Reversed.