The MOAB is one impressive bomb, and for the people who attached the pictures that provide scale and reference, thanks. Seeing the pictures of the Tallboy and the Grand Slam reminded me of something, though. Those bombs were carried by the Avro Lancaster, which managed to get those monsters off the ground and on target (well, in the vicinity of the target, but who needs precision with a bomb that big) using a combined 2520hp from four R/R Merlin engines.

Now *that* is impressive.