The Obama administration is working hard to play down the U.S. role in the airstrikes and no-fly zone operations on and over Libya, with senior officials stressing that the U.S. involvement is “limited” and that the operation is a broad-based coalition effort with international participation and Arab League backing — not a U.S.-led foray into yet another predominantly Muslim nation, which could further damage its already poor image in that part of the world. The Navy released at least seven images Monday, all apparently aimed at reinforcing that sense: All but one includes a coalition officer or aircraft. For example:…