美军在轰炸阿富汗时曾投下了一枚５０００lb重的激光制导巨型炸弹，这是美军首次在阿富汗使用这种炸弹。据悉，美军在１９９１年的海湾战争中也曾使用过这种炸弹。这次使用GBU－２８激光制导炸弹是为了打击塔利班政权领导人的地下指挥和控制中心以及其他坚固的地下掩体。GBU－ In its bombing of Afghanistan, the U.S. military dropped a 5000 lb. laser-guided mega-bomb, the first time the U.S. military has used the bomb in Afghanistan. It is learned that the U.S. military also used this bomb during the 1991 Gulf War. The use of the GBU-28 laser-guided bombs this time is aimed at cracking down the underground command and control center of the Taliban leadership and other sturdy underground bunkers. GBU-