2 examples of in-fighting in sentences

" "David, you are a brick when it comes to the in-fighting," said the general manager; and then he finished buttoning his collar.

He is a curious combination, is David: keen and sharp-witted and as cold as an icicle in the planning part; but when it comes to the in-fighting he hasn't sense enough to pound sand, as his New Hampshire neighbors would say.

2 examples of  in-fighting  in sentences