Authorities Cited: United States Code 38 U.S.C. § 1154(a) 38 U.S.C. § 5107(a) 38 U.S.C. § 5107(b) 38 U.S.C. § 7292(a) Code of Federal Regulations 38 C.F.R. § 3.303(a) 38 C.F.R. § 3.307(b) Circuit Courts 514 F.2d 734, 737 900 F.2d 464, 469 72 F.3d 326, 334 112 F.3d 1398, 1407 119 F.3d 929, 931 276 F.3d 228, 232 306 F.3d 99, 107-108 306 F.3d 806, 824 451 F.3d 1331 455 F.3d 1346