It's called that because it's how you cover people.
If you ask someone to darn your sock, and they do, will you complain "hey, I didn't say 'darning needle'"?
A cop saying “cover me” is asking for something the marine might call overwatch.
It's called that because it's how you cover people.
If you ask someone to darn your sock, and they do, will you complain "hey, I didn't say 'darning needle'"?