On July 27 around 6:20pm local time, two V-22 Ospreys, callsigns ELVIS11 and ELVIS12, flew north on the Potomac Radar, passing KDCA, looping around the Pentagon, then leaving the area heading up Maryland Route 210.
On July 29, around 7:00am local time, they did the same thing.
Anyone know what they were doing in the area (aside from flying around)? I'll look to see if the archives caught them, as they were on frequency with DCAFW and DCA_TWR.