What Tactical Data Link system is an encrypted line-of-sight system that has transmit and receive capabilities for full motion video?

• A. LINK 16
• B. PACWIND
• C. JSTARS
• D. TACWIN

Answer: (B)

The key idea here is recognizing a data link system that provides secure, line-of-sight two-way communication specifically capable of carrying full-motion video. PACWIND is a tactical data link designed for encrypted line-of-sight transmission, and it supports both transmit and receive of high-bandwidth video streams. That combination—secure LOS connectivity with FMV capability—fits the description exactly, making PACWIND the best match.

Link 16 is a widely used encrypted, line-of-sight data link, but its primary role is general data exchange in a TDMA network rather than dedicated full-motion video; JSTARS is an airborne platform that uses data links but isn’t itself a data-link system; TACWIN is an older LOS data link with different use cases and doesn’t align as directly with FMV transmission.