Folks, the Celtics aren't traveling coach class, like many of us do, crammed like sardines for 5.5 hrs. They have a chartered flight (sorry, team plane) with nice coaches to lounge around and get comfortable the whole way.
Finally, when they arrive at either LAX or Long Beach (or Ontario CA, if they're worried about local hecklers), they'll be sleeping an additional 2+ hours at the hotel, due to the timezone shift, and be fully rested. This is the magic of east-to-west coast travel. It works out great for the east coaster but is a bad thing for the business traveler coming out from Cali for the first few days in New York or Boston for a meeting or conference.
We're in good hands.