Some aircrews may remember MARS primarily for morale phone patches, but today's MARSRADIO provides considerably more. MARSRADIO is an Air Force MARS operation authorized under DoDI 4650.02, providing HF communications support to DoD aircraft and units worldwide as an additional backup to HFGCS. Air Force aircraft are consistent users of the service, but we also routinely support Navy, Marine Corps, and Army aviation. Most of the traffic we handle is real-world operational support, not exercises or training. So far this year, MARSRADIO operators have provided nearly 14,000 man-hours guarding our calling frequencies and supporting DoD aircrews. That has included more than 330 official phone patches, 80 METAR/TAF weather requests, and nearly 2,300 radio and SELCAL checks, in addition to morale patches and other operational support. The official traffic can be as routine as passing an ETA or arranging customs, fuel, parking, maintenance, or ground transportation. At other times, crews have used us for diversions, aircraft system problems, severe weather, medical situations, command post coordination, and troubleshooting SATCOM or digital communications. The real value is having another communications path when the expected one isn't working. We have had many situations where an aircraft could not establish its normal SATCOM or data link, but an HF phone patch through MARSRADIO allowed the crew and ground personnel to troubleshoot the problem, coordinate what was needed, and continue the mission. That is where MARSRADIO fits into P.A.C.E. planning—not as a replacement for existing systems, but as another path available when needed. The net operates nearly 24/7, and there is no need to coordinate ahead of time. Crews don't need to wait until something goes wrong to use us. A routine radio check, SELCAL check, weather request, phone patch, or pre-arrival call gives the crew familiarity with MARSRADIO before the day comes when the primary communications path isn't available. For aircrews unfamiliar with MARSRADIO, information on frequencies, calling procedures, and available services is available at MARSRADIO Global.