EUROPE - U.S. military bases in Europe have been put on a heightened alert status, with one U.S. official stationed at a base in Europe saying they haven't seen the level this high (at its second highest state) in "at least 10 years," and went on to say this usually means the U.S. military has received an “active-reliable threat".
https://www.defconalerts.com/p/us-ba...-on-heightened
Bases known to be on heightened alert: EUCOM Base In Stuttgart, Germany: Condition Charlie; Aviano Air Base in Italy: Condition Charlie; Other installations in Italy: Enhanced security measures; Rheinland-Pfalz garrison, including Baumholder and other installations in Romania and Bulgaria; Ramstein Air Base in Germany; Spangdahlem Air Base in West Germany: Prohibited from wearing uniforms off base, commuting in civilian clothing only.