入伍的当年，碰上了一个千载难逢的机会：应北京军区的邀请，经总参谋部批准，我们部队到华北地区参加了一次重要的军事演习。
O O O B-Time I-Time O O O O O O O O O O O O O O O B-Organization I-Organization I-Organization B-Time O O O O O B-Organization I-Organization I-Organization I-Organization O O O B-Person I-Person B-Organization I-Organization O B-Location I-Location I-Location I-Location O O O O O O O O B-Physical I-Physical I-Physical I-Physical O