What was found
CAPT FMC SWITCHED TO MAIN MENUE AND "VTK" ON ND, MAP DISPLAY WENT AWAY THEN CAME BACK, ALL LASTED ABOUT 15 SECONDS. 10 MIN LATER F.O.'S FMC WENT TO MAIN MENUE, HIS MAP FLICKERED AND GOT "VTK" FOR JUST A COUPLE SECONDS, THEN CAME BACK ON LINE. THEN WITHIN THE NEXT MIN. WE GOT A R-GPS INVALID FOR ABOUT 2 MIN. ALL OF THIS OCCURED AROUND LOS ALAMOS TESTING FACICITY, NOT SURE IF TESTING WAS GOING ON. ALL SYSTEMS ARE NOW OPS NORMAL. GROUNDED - YES. CYCLED POWER TO LEFT AND RIGHT FMC OPS RESTORED NO FAULT LOGGED REF FIM TASK 34-61-00-810-918, SEAMC PHIL NOTIFIED.