ATLANTIC OCEAN (May 23, 2021) Sub-Lieutenant Dmitriy Shulga, a Naval Warfare Officer, takes a navigational bearing with a Polaris on the bridge of Standing NATO Maritime Group One (SNMG1) Flagship HMCS Halifax off the coast of Portugal on May 23, 2021 during Exercise Steadfast Defender 21. HMCS Halifax is participating in the Combat Enhancement/Force Integration Training Phase of the exercise, a defensive exercise based on an Article 5 scenario which is designed to deter aggression and respond to crisis if necessary. The Maritime Live Exercise is taking place from 20-30 May, 2021 in the waters off Lisbon, Portugal. (NATO photo by Sailor 1st Class Bryan Underwood, Royal Canadian Navy)