What was found
(CAN) ON DESCENT WITH WINDSHIELD HEAT SELECTED ON, THE ACFT HAD CLEARED ICING SO SYSTEM WAS THEN TURNED OFF. THROUGH 24,000 FT, A SHORT TIME LATER, ICE WAS ENCOUNTERED AND SYS WAS TURNED BACK ON. SHORTLY THEREAFTER, THE CENTER HIGH ELEMENT PANEL AREA CRACKED FORWARD AND AFT. WITH A FEW SMALLER SPIDER CRACKS LT TO RT ACROSS HIGH ELEMENT AREA TOWARDS EDGE OF THE GLASS AT CENTER POST. ACFT CONTINUED DESCENT TO TRENTON HOME BASE WITH NO FURTHER ISSUES. A MILITARY FLIGHT SAFETY REPORT WAS FILED WITH WING OPS AS STANDARD PROCEDURES. NEW WINDSHIELD AND WINDSHIELD HEAT CONTROLLER, PN WITH FULL FUNCTION TESTS AUGUST 30, 2012.