After an exhausting session with Victoria's Secret Police, Hobo
blurted out:

Has there ever been an aircraft with a gun permanently aligned
off-center?

F-15's gun is angled slightly above the waterline...for air-to-air,
making it unsuitable for strafe.

At least that's the answer I got at a PACAF conference when I asked
why they didn't have a 51-50 requirement to strafe.

Juvat