Mike Plesha, CDF Architect proposed a re-design of the venerable BC-3 cab. CDF officials requested a prototype (reduced scale) model be tested first. The success of the 64 sq. ft., Likely Mountain cab paved the way for the construction of a full sized, 196 sq. ft., (732-6A style) cab at Sawmill Peak in 1969. The three-legged, 38 foot steel tower at the Likely site came from Thompson Peak, Plumas National Forest. The "Nomad" trailer has served as residence since 1967.
The tower was staffed intermittently during predicted lightning events as of 2015.