TagGround Operations(2)

Ramp controllers Jamaal Surrell, center, and Daniel Pakulin monitor the movements of planes and vehicles from Seattle-Tacoma International Airport’s ramp control tower last month. Sea-Tac plans to add transponders and antennas that sync with the FAA’s system, giving air traffic controllers more visibility into vehicle movements. (Karen Ducey/ Seattle Times)Less By Lauren Rosenblatt Seattle Times