
    Frank SUMMERS; Joselyn M. Summers, Appellants v. The UNITED STATES; John Does I-X; ABC Companies I-X.
    No. 12-3961.
    United States Court of Appeals, Third Circuit.
    Submitted Pursuant to Third Circuit LAR 34.1(a) Oct. 11, 2013.
    Filed: Oct. 29, 2013.
    
      Gary F. Piserchia, Esq., Mount Laurel, NJ, for Appellants.
    Colette R. Buchanan, Esq., Office of United States Attorney, Newark, NJ, for Appellee.
    BEFORE: FUENTES, COWEN, and BARRY, Circuit Judges.
   OPINION

COWEN, Circuit Judge.

Frank Summers (“Summers”) and his wife, Joselyn M. Summers (“JMS”), raised claims against the United States of America (“the Government”); Summers raised claims for negligence and premises liability, and JMS raised a derivative claim for loss of consortium. Following a six-day bench trial, the District Court entered judgment on all of those claims against Summers and JMS, and in favor of the Government. Summers and JMS now appeal the entry of judgment. For the reasons that follow, we will affirm.

I.

The claims at issue here relate to Summers’s work at the Doughboy Gymnasium (“the Gym”), which is located at the Dix unit of Joint Base McGuire-Dix-Lake-hurst, more commonly known as “Fort Dix.” Summers’s employer had been hired to replace the Gym’s roof. On January 2, 2008, as Summers worked to complete that task, he climbed a roof access ladder located on the side of the Gym (“the Ladder”), inspected the roof, and began descending the Ladder. As he neared the bottom rungs of the Ladder — when his feet were approximately two and a half feet from the ground — Summers lost his balance and fell to the ground.

Summers testified at trial that he fell because the Ladder had “jarred away from the building and twisted and” thrown him. (J.A. 55.) On cross examination, he explained that “[wjhat made me fall was the ladder jarred from the building, bounced.” (J.A. 76.) He further explained that the Ladder had “[n]ot swung” from the building, but had “[jjarred enough to startle me not to know what to do.” (Id.)

The Ladder, as described by the District Judge, was comprised of steel rungs and steel side rails, and was fastened to the Gym’s exterior brick wall by three sets of steel bolts. A fourth set of steel bolts, which should have fastened the bottom of the Ladder to the Gym’s exterior brick wall, was completely detached from the wall. The bottom of the Ladder was permanently bent sideways, along the same plane as the wall.

Both the plaintiff-appellants and the Government retained experts who examined and tested the Ladder, and testified at trial. Based on their testimony, the District Judge found that on January 2, 2008, as Summers descended the Ladder, the Ladder was completely stable along the ‘Y-axis” (i.e., vertically) and the “Z-axis” (i.e., in a direction moving away from the wall). However, the District Judge recognized that the experts’ testimony “radically differ[ed]” with respect to the Ladder’s ability to shift along the “X-axis” (i.e., horizontally or laterally). (J.A. 8.) The plaintiff-appellants’ expert, George Widas, testified that he was able to grab the bottom rung of the Ladder with his hand and move it approximately twelve inches, from side to side. But the Government’s expert, Jack Krafchick, opined that such movement was “impossible.” (J.A. 280.) Krafchick testified that the Ladder, despite its condition — i.e., despite the condition of the fourth set of steel bolts, which should have been but were not attached to the Gym’s exterior brick wall, and the bottom of the Ladder, which was permanently bent sideways — was capable of no greater lateral movement than three-sixteenths of an inch. He described such movement as “pretty negligible.” (J.A. 217.)

The District Judge found that Krafch-ick’s testimony regarding the Ladder’s lateral movement was more persuasive than Widas’s related testimony. He explained that this finding was based neither on the experts’ credibility nor their underlying scientific theories and testing methodologies. Instead, he explained that he found Widas’s “explanation for the extent of deflection” along the X-axis to be factually and “fundamentally flawed.” (J.A. 10.)

The District Judge assumed arguendo that Summers had established the Government’s liability on both the negligence and premises liability claims. But the District Judge concluded that Summers had not established another element shared by both of those claims: proximate cause. He reiterated the earlier finding that the Ladder was incapable of significant movement along the X-axis, and concluded that Summers’s testimony that the Ladder “jarred” was inconsistent with both the Ladder’s inability to move along the Y- and Z-axies, and its limited ability to move laterally along the X-axis. Because he concluded that the Ladder’s condition rendered it incapable of significant movement, he reached three further conclusions: first, that the Ladder’s condition had not caused Summers to fall; second, that the Ladder’s condition was not the proximate cause of Summers’s injuries; and third, that Summers had failed to carry his burden of proof on the negligence and premises liability claims.

III.

On appeal, Summers and JMS challenge the findings of fact that underlie the District Judge’s conclusion that Summers failed to carry his burden of proof with respect to the proximate cause element of both of his claims. Challenges to such findings are reviewed for clear error. See Fed.R.Civ.P. 52(a)(6); Lanning v. Se. Pa. Transp. Auth. (SEPTA), 181 F.3d 478, 481 (3d Cir.1999). “Factual findings are not clearly erroneous if the record contains sufficient evidence to support them.” Agathos v. Starlite Motel, 977 F.2d 1500, 1504 (3d Cir.1992). “If the district court’s account of the evidence is plausible in light of the record viewed in its entirety, the court of appeals may not reverse it.... Where there are two permissible views of the evidence, the factfinder’s choice between them cannot be clearly erroneous.” Anderson v. City of Bessemer City, N.C., 470 U.S. 564, 573-74, 105 S.Ct. 1504, 84 L.Ed.2d 518 (1985).

Here, the record evidence supports the District Judge’s findings concerning the Ladder’s relative inability to move along the X-axis. Specifically, for the reasons recited above, the record evidence supports the District Judge’s decision to credit Krafchik’s testimony over Widas’s testimony. Accordingly, we find no clear error in the District Judge’s analysis, and no reason to disturb the judgment on appeal.

IV.

For the foregoing reasons, we will affirm the judgment entered by the District Court. 
      
      . The District Court had jurisdiction pursuant to 28 U.S.C. § 1346(b)(1). We have jurisdiction pursuant to 28 U.S.C. § 1291.
     
      
      . These findings are not challenged on appeal.
     
      
      . These findings, like those relating to the make-up of the Ladder, are not challenged on appeal.
     
      
      . Krafchick opined that the Ladder was incapable of significant movement along the X-axis. He explained, "a one foot deflection in the lateral direction would suggest that the side rails [of the Ladder] were made out of spaghetti. They're made out of structural steel.... They can’t deflect that much.” (J.A. 232.)
     
      
      .Because the District Judge concluded that Summers failed to carry his burden of proof on those claims, he necessarily concluded that JMS's derivative loss of consortium claim failed.
     