First, McCain takes the time to shake the hands of every person he passes. Obama talked to one person in the line and skipped past the fireman and the construction worker to move on to laying his rose. However, he didn't really "lay" his rose, either.
If you watch John and Cindy McCain, they each take the time to bend down and solemnly lay their roses on the ground. Obama and Mayor Bloomberg, however, each toss their roses onto the pile. It's a small gesture, but speaks volumes about life experience and attitude.
If you watch on, you'll notice that John and Cindy each receive a pin from two different fireman. I don't see any of the firemen giving anything to Obama. I wonder what the pin is, and what the firemen feel about Obama and the war.
It could be nothing, but it could be a very subtle clue as to how they view this campaign.
h/t Michelle Malkin