On April 11, the USS Donald Cook, a U.S. Navy destroyer, was performing landing drills in the international waters of the Baltic Sea when several Russian military planes swooped alarmingly close to the vessel.
On April 11, the USS Donald Cook, a U.S. Navy destroyer, was performing landing drills in the international waters of the Baltic Sea when several Russian military planes swooped alarmingly close to the vessel.
The aircraft were determined to be unarmed, but appeared to be operating as if simulating an attack.
The following day, a Russian helicopter circled the USS Donald Cook a number of times.
Soon after, a pair of jets made 11 flybys.