 The vast majority of ground platforms use the PM FBCB2 procured Enhanced Version 4 FBCB2 Computer (EV4) ruggedized computer or the newer more powerful Joint Version 5, FBCB2 Computer (JV5) computer.FBCB2 leverages the Enhanced Position Location Reporting System (EPLRS) tactical radio network in 15 Brigades (approximately 20% of our Army units).For the remainder of the force structure (approximately 80% of our units), FBCB2 provides an on-the-move L- Band satellite communications transceiver, commonly referred to as Blue Force Tracking (BFT).