The Doorknob was a sounding rocket...

used in the Pacific in 1958 during Project Hardtack to monitor the radiation in the upper atmosphere during the nuclear tests. Here’s my scale model lifting off from the Ken’s Lake Missile Test Range early this morning.

The snazzy Doorknob roaring off the launch rail under thrust from a “F” engine, achieving an 893 foot apogee during its minute-long flight.