Usmc m116a3 marcorsyscom ?

I picked up some trailers from GL last week at Salina KS, (thanks Glen) they were all former USMC steel flatbeds except for this one. Everything above the frame is aluminum, it had 6 reel holders but 2 that were on the front have been removed. The tool box in front of the fenders has a door on each side and one across the front. Do any of you former/active Marines know what it was used for? I do know that MARCORSYSCOM is Marine Corps System Command and it was COMMUNICATIONS TRAILER CONTAINS A FLAT BED WITH SIX REEL CABLES . I plan on putting to channels on the deck to tote around 2 of my M1030B1 bikes.