Home Employee DTRA Operation Center DTRA Operations Center (24/7/365): NIPR: dtra.belvoir.oi.mbx.joint-ops-center@mail.mil SIPR: dtra.belvoir.oi.mbx.joint-ops-center@mail.smil.mil Commercial Phone: 703-767-2003 Toll-Free: 877-240-1187 DSN (STE): 427-2003 DTRA RFI Form (web version) DTRA RFI Form (PDF version)