Beach policemen, for short, 3 letters
Discounted items: abbr., 3 letters
Genus subgroups (abbr.), 3 letters
Method of delivery: Abbr., 3 letters
Naval cops, 3 letters
Navy AWOL hunters, 3 letters
U.S.N. cops, 3 letters
U.S.N. policing groups, 3 letters
USN police, 3 letters
Era of rockets, 8 letters
Scattered, 4 letters
Number, police HQ, N.Y.C., 7 letters