1 . He denied that he'd failed to keep a proper lookout that night.
2 . Troops tried to set up a lookout post inside a refugee camp.
3 . We're always on the lookout for good computer programmers.
4 . Keep a lookout for a nasty little organization calling itself Defence Through Strength.
5 . Nature lovers will be on the lookout for eagles, cormorants, and the occasional whale.