Is this a notable difference?
http://latimesblogs.latimes.com/washington/2010/03/barack-obama-george-w-bush-us-troops.html
Maybe it's just me but it looks to me as if the soldiers _loved_ George W. Bush but merely respect Barack Obama. Soldiers appear to want to get closer to Bush but seem bored in Obama's presence, just standing where there were supposed to stand.
Also Bush stands in their middle while Obama is on the other side of a fence (but this might have to do with how the visit was arranged).
Interesting?