Given that the country is at war, why is Obama skipping the Memorial Day Ceremonies?

It is one thing for Obama to be taking his second vacation in about a month. It is another that he is skipping ceremonies honoring those who have died fighting for the country while we are in fact still fighting a couple of wars. It just seems strange that a president would do this. It is almost as if he wants to anger those serving in the military and other Americans. Presumably Obama doesn't enjoy those types of military ceremonies, but I just can't figure out why he is doing it.