I, too, was upset when it looked like President Barack Obama was not properly saluting the military personnel who greet him upon deboarding Air Force One. On a different newscast I realized that some news cameras focus from the president's side rather than showing him saluting the officer of the day, who is always in front of him and looking directly at him as he salutes. CNN usually does a good job of covering this protocol.
Obama has a high regard for all military personnel. Please don't let a faulty camera angle distort your opinion of him.