Okay, so I respect the office of the President of the United States, alot. Therefore, I was quite overjoyed to see some "presidential" helicopters flying overhead today as we were downtown, admiring the cherry blossoms.
Anyways, I had my camera-phone out and was taking a picture of me at the Jefferson memorial. See figure 4-01.
FIG. 4-01 Okay, maybe a minute later I hear a helicopter flying low, so I turn around and see this helicoptor fly right in the same space that I just took my picture. See FIG. 4-02.
FIG. 4-02. About 30 minutes later, we (Jodie, Rachel and I) are walking back toward the Metro, and we hear the helicopters again, this time they're on a mission. One comes in low from just over the Jefferson memorial toward the big house, and then another follows and then another follows. The first two come in for a landing and then bail at the last minute. But the last one, Marine One, settles in at the White House. It was very cool! I got home and looked up some details on the web. Look at the pict I found. See FIG. 4-03.
FIG. 4-03. The very cool part is just after all the activity, I turn around and begin to look for the Metro station, I look towards the Mall and something catches out of the corner of my eye. Two men in black attire, emerge from a rooftop and swing very large black bags, as one would do a rifle. It was obvious they were security snipers. We watched them for about 40 secs, and they were gone. It was way cool!
FIG. 4-01 
FIG. 4-02. 
FIG. 4-03. 