I listened. Kinetic energy is the mass times the square of the velocity. F4's go way faster than 737's. Thus kinetic energy is comprable between the two.

On the second point: http://en.wikipedia.org/wiki/Containment_building

"The containment building itself is typically an airtight steel structure enclosing the reactor normally sealed off from the outside atmosphere. The steel is either free-standing or attached to the concrete missile shield. In the United States, the design and thickness of the containment and the missile shield are governed by federal regulations (10 CFR 50.55a), and must be strong enough to withstand the impact of a fully loaded passenger airliner without rupture.[3][not in citation given]"

It's also not my nuclear reactor. My power comes from hydroelectric thank you very much.