 A number of U.S. military bases in Europe on heightened alert over possible terror attacks. It's not clear what exactly caused the alert to be raised to the second highest level, but European authorities have been tightening security ahead of the Paris Olympics and the ongoing European football season. Forecasters now keeping an eye on Hurricane Beryl in the Caribbean. The historic storm became the earliest Cat 4 hurricane on record, forming farther east than any other Atlantic hurricane in June.