Army Special Forces soldiers pictured aboard Ground Mobility Vehicles (GMVs).
Special Forces ODAs that specialize in the use of GMVs are known as mounted teams.
On long range operations, mounted ODAs typically operate in convoys of 4 GMVs, with 3 Green Berets per vehicle.
There is at least one mounted ODA in each Battalion within a Special Forces Group.
GMVs are a version of the HMMWV designed for special operations forces.
Special Forces use the GMV-S variant.
They feature a flat bed at the rear that can accomodate extra passengers (as shown here) or additional stores, ammunition etc when operating on extended patrols.