 On this Independence Day week, American military bases across Europe on high terror alert. U.S. military bases across Europe on high alert right now over concerns of a possible terrorist attack. A U.S. defense official telling Fox News there is credible intel that an attack could happen over the next week or so. The level of force protection has now been raised to its second highest level. The bases include U.S. Army Garrison in Germany, where U.S. European Command is headquartered.