Too close for missiles, switching to guns.
I'm maneuvering for a shot.
(I laugh every time I hear that one. Why not "I just depressed my thumb mic switch so I could say this and am now speaking. Next, I'll continue scanning and cross checking my instruments so as not to lose control of my aircraft. I'll follow that with a barrel roll and I'm considering a ham and cheese on rye for dinner when we get home.")