while the jem has passed government certification, it is an evolutionary platform, and not fully compatible with all specifications of jtrs. the fully compatible system is the jtrs hms, (handheld, manpack and small form-fit) being developed by general dynamics, and expected to be introduced in 2010. thales communications, bae systems, and rockwell collins are all prime subcontractors. the hms is expected to be an integral part in the us army's future combat systems program.