Position Summary: This position serves as the Senior TSIGS Subject Matter Expert (SME) & Support Liaison, providing enterprise‑level technical leadership, operational insight, training advisement, and cross‑agency coordination for TSIGS platforms including TSPRING, SCAMP, Team Sentinel, P‑LINE, fly‑away kits, and associated subsystems. Ability to collaborate with multi-agency partners (Army, NSA, Navy, C5ISR, international partners), including experience facilitating working groups, user forums, or cross-organizational coordination.