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kjfitz picture
@ 2007-11-30 18:34:59
I think you caught the smaller of the president's helicopters. It is definitely a Blackhawk variant and the only on I know of painted that way is the Whitehawk, i.e. marine One:

Sure looks like Marine One to me!
AlbinoFlea picture
@ 2007-11-30 18:56:35
Ha... and here I just went looking for paddle boats...

There's another view of it almost out of frame here:
Parabellum picture
@ 2007-11-30 19:04:14
I agree, but it's not called Marine One unless the POTUS is aboard. There's also more than one VH-60 with this paint scheme.

More info in the comments here: