TITUSVILLE, FL (AP).- Officials say two workers have been seriously injured outside the United States Astronaut Hall of Fame after coming in contact with a power line. Kennedy Space Center Visitor Complex spokeswoman Andrea Farmer says the workers were setting up for a launch viewing event Wednesday. Space shuttle Discovery is scheduled to make its final launch Thursday at nearby Cape Canaveral. Four workers had been erecting a metal frame tent when bystanders — including a group of students on a field trip — saw a bright flash. Two men had let go of the tent after feeling a tingle, but two others were knocked to the ground. Farmer says one man was taken by helicopter to an Orlando hospital. The other man was taken to a local hospital. The men’s names and conditions weren’t immediately released.