This main quest is the first dangerous mission of the entire game (and an extremely lengthy one at that), which allows New Vegas to keep up with Fallout 3 in terms of how quickly you get into the meat of the game.
357 Magnum, Single Shotgun, Patriot's Cookbook, Locksmith's Reader, Worn Key, Big Book of Science, Programmer's Digest (x2), Bobby Pins, Energy Cells, Future Weapons Today Magazine, Turbo (x2), 5.56mm Rounds, Anti-Venom, Laser Pistol, Fixer. Bottle Caps, Mentats (x3), Purified Water (x4), Doctor's Bag (x2), Super Stimpak, Steady, Bison Steve Maintenance Key, Rad-X, 9mm Pistol, Med-X (圆), Stimpak (x2), Blood Pack, Buffout, Jet (x3), Psycho (x4), 10mm Pistol (x2), 10mm Rounds.