Current and near future space and terrestrial communication capabilities are examined for tactical connectivity. Defense Communications Systems (DCS) connectivity, and commercial communications. Efficient and effective communications in response to a crisis will depend on a mix of space- and terrestrial-based systems from both the military and civilian sectors. Space-based systems described include UHF military satellite communications operating on the Fleet Satellite constellation, SHF communications operating on the Defense Satellite Communications System (DSCS), and future EHF communications using systems such as Milstar. Terrestrial systems examined include the JCSE (Joint Communications Support Element) at MacDill Air Force Base, FL, and civilian secure communications.
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