Tower Hobbies is the retail outlet for Great planes model distibution. Anything made or sold by Great Planes
is also sold by tower. Actually they share the same warehouse. GP is the only distibutor of OS and Futaba
in the U.S.

Hanger 9 is an in house product line for Horizon Hobby (2nd largest distributor of hobby products)
Horizon is the only distributor of JR, Spektrum, Evo, And Saito. in the U.S.

80% of all the stuff you see at the LHS was most likely ordered from these companies.