As part of my work on another thing I'll probably be posting at some point, I drew a USAF's "Sea Sitter" ICBM toting flying boat. General idea is you stick the ICBM on a seaplane and then it flies out to sea, lands in the open ocean and then just sorta drifts around, periodically taking off and repositioning to make it harder to keep track of. The missile can be launched at any time, so it doesn't matter if the aircraft is airborne, afloat or even on the ramp at it's home base. This specific concept was one of a number created by Lockheed and would have carried the small ICBM concept which later became Midgetman. Most of the other concepts Lockheed did were much larger aircraft in order to carry the full sized MX Missile.