Strong concerns that terrorist teams in Europe have selected their targets, completed their surveillance, eluded capture and are now ready to strike at airports and tourist attractions have prompted the State Department to ready a highly unusual travel advisory for Europe, multiple law enforcement and intelligence sources tell ABC News…

The current concerns are for scenarios that include opening fire at airports in Europe as well as executing similar attacks at “soft” targets like tourist attractions or hotels.

According to ABC News sources, the terror plotters have moved through the surveillance stage, checked back in with al Qaeda in Pakistan, and have received the go-ahead to strike.