Complete the following sentence: Lee was sent to Detroit, Michigan, where he was from 12 September to 2 December 1909, and then to the
Panama Canal Zone until May 1910, after which he was posted to Rock Island, Illinois, where he worked on a project on the upper Mississippi River, and then in July 1910 to Pittsburgh, Pennsylvania, to work on the Ohio River locks. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️