Military.com reports that “the American military community in Europe is being urged to maintain heightened vigilance over the holidays.”  

“‘Service members, civilians and family members are encouraged to be extra vigilant around areas of public transportation, such as train stations and airports, as well as celebrations that attract large crowds,’ U.S. European Command said in a holiday message to staff this week.”  

“The EUCOM message coincides with a worldwide State Department travel warning, which also urges vigilance. In the wake of the Nov. 13 terrorist attacks in Paris, which were carried out by Islamic extremists and resulted in the deaths of 130 people, the military community has put increased attention on the security environment around Europe.”