The Bel Air Lions are celebrating their 75th year of service to the Bel Air community.   In celebration of that, and the LCI 100th anniversary, the Lions presented the Commissioners of the Town of Bel Air a check for $28,000 for a new shade pavilion, picnic table and paver floor at the Shamrock Park playground in Bel Air.    The pavilion will be constructed this fall by the Town.   The Lions will organize volunteers to install the paver floor.  The Lions have had a long history of supporting activities at Shamrock Park.