the district court’s grant of summary judgment in favor of NEC. * Pursuant to 5th Cir. R. 47.5, the court has determined that this opinion should not be published and is not precedent except under the limited circumstances set forth in 5th Cir. R. 47.5.4. 1 . 29 U.S.C. §§ 621-634. 2 . In a separate order, the district court granted summary judgment in favor of a second defendant, RedRiver Systems, L.L.C. That defendant is not a party to this appeal. 3 .Cramer v. NEC Corp. of Am., No. 3:10-CV-1428-L, 2012 WL 369538, at *6 n. * (N.D.Tex. Feb. 3, 2012). 4 . R.R. Mgmt. Co., L.L.C. v. CFS La. Midstream Co., 428 F.3d 214, 217 (5th Cir.2005). 5 . Id. at 220. 6 . Fed.R.Evid. 901(a); McConathy v. Dr. Pepper/Seven Up Corp., 131 F.3d 558, 562 (5th Cir.1998). 7 . See R.R. Mgmt., 428 F.3d at 220 (<HOLDING>). 8 . Jackson v. Cal-W. Packaging Corp., 602
holding that the admission or exclusion of evidence is within discretion of the trial court and that such determinations will not be disturbed on appeal absent clear abuse of discretion holding that rulings on admissibility of evidence are within the discretion of the trial court and will not be disturbed absent a showing of abuse of that discretion holding that experts cursory testimony did not make his opinion conclusory because accompanying exhibit explained the basis for his conclusion holding no abuse of discretion in trial courts exclusion of evidence where evidence was cumulative holding that exclusion of an exhibit was not an abuse of discretion absent indicia of authenticity within the exhibit itself or other evidence on the record tending to authenticate the exhibit