The Yankees and Mets are wearing first responders' hats today for the anniversary of 9/11 (via @mets)
Mets, Yankess don NYPD, FDNY hats, honor Sept. 11 first responders
Yankees, Mets Honor New York First Responders Sunday, 21 years after 9/11 - Fastball
Mets to wear hats honoring 9/11 first responders, Pete Alonso says
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NY Mets To Wear FDNY, NYPD Caps During 9/11 Anniversary Game
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