Authorities Cited: Supreme Court 331 U.S. 532, 536 Circuit Courts 378 F.2d 409, 415 604 F.2d 561, 565-566 769 F.2d 466, 470 780 F.2d 1358, 1361 869 F.2d 1155, 1162 975 F.2d 528, 532 26 F.3d 88, 91 53 F.3d 186, 190 57 F.3d 680, 683 63 F.3d 786, 790 162 F.3d 1004, 1008 319 F.3d 350, 355 335 F.3d 810, 817 383 F.3d 761, 765 478 F.3d 941, 946 Federal Rules of Civil Procedure Fed. R. Civ. P. 16(b)(3)(B)(i) Fed. R. Civ. P. 26(e) Fed. R. Civ. P. 37(c) Fed. R. Civ. P. 37(c)(1)