ATLANTIC OCEAN (May 20, 2021) A sailor stands watch aboard the Spanish navy frigate ESPS Mendez Nunez (F-104), flagship for Standing NATO Maritime Group 2, during Exercise Steadfast Defender 21. Steadfast Defender is a defensive exercise based on an Article 5 scenario which is designed to deter aggression and respond to crisis if necessary. The displays in this image have been altered to protect security. The displays in this image have been altered to protect security. (Photo courtesy of the Spanish navy by Petty Officer Laura Pons Miles)