Ultra-High Frequency (UHF) communications and Super-High Frequency (SHF) antijam command and broadcast capabilities through four pairs of geosynchronous satellites and one spare; tactical application.
Near-polar orbits; investigate Earth's environment.
Horizons 1 is Ku-band payload; C-band is on Galaxy 13.
Electronic intelligence (ELINT).
"Super High Frequency (SHF) for U.S. government and military; sophisticated survivability enhancement; worldwide, longhaul coverage; X-band. "
"24 C-band, 2 Ka-band, 32 Ku-band; additional C-band payload owned and operated by Loral Skynet."