PITTSBURGH INTERNATIONAL AIRPORT AIR RESERVE STATION, Pa. -- The 911th Force Support Squadron Fitness Center hosted a special 3 kilometer walk/run in celebration of National Pet Day at the Pittsburgh International Airport Air Reserve Station, Pennsylvania, April 11, 2019. Celebrity pet lifestyle expert and animal welfare advocate Colleen Paige founded National Pet Day in 2005 as a way to encourage people to pay extra attention to their pets and to adopt pets.