Sgt. Brian Murphy participates in a family fun ride with the Quantico Mountain Bike Club on April 1 while towing his daughters Alana, 4, and Eva, 3, behind him in a trailer. - Sgt. Brian Murphy participates in a family fun ride with the Quantico Mountain Bike Club on April 1 while towing his daughters Alana, 4, and Eva, 3, behind him in a trailer.