Travel Insurance

You should check your medical insurance to see what kind of coverage, if any, you have abroad.
If you want, you can add travel insurance, which offers different options for medical treatment, evacuation, terrorist acts, trip cancellation, etc.

The company TravelGuard gets an A+ from the Better Business Bureau and is what AAA offers. I've never gotten travel insurance before, but there's a Sangha who has bough policies from them, which thankfully she has needed to use. Because of health issues, I will probably buy a policy from them.

Rick Steves' Do I Need Travel Insurance?

Layover Time on Return

If you returning via another US city, allow at least 2 hours for your layover to go through Customs. (If you are returning via a European city it's not an issue; you will go through Customs in your home city, because it is your first port of entry.)