9:49 AM: As mentioned in our morning traffic watch, it’s opening day for the Seattle Mariners, with their first game of the season starting just after 7 pm at T-Mobile Park. We’ve also just learned that you might notice U.S. Army helicopters in the area this afternoon and evening because of a planned flyover. The 16th Combat Aviation Brigade from Joint Base Lewis-McChord (south of Tacoma) says that four of its AH-64E Apache helicopters (from Alpha Troop, 4-6 Air Cavalry Squadron), are set for the flyover around 7, preceded by up to three practice runs around 3:20 pm. The 16th CAB says their path will be north-south, so they might not be as noticeable over West Seattle this time.
ADDED 5:08 PM: Thanks to Carolyn Newman for practice-run video of the four helicopters: