1.   A permanent new radar antenna was up and running Monday at Logan International Airport, but officials remained confounded why the one it replaced toppled suddenly on Saturday.

2.   During World War II, its metal shops created a prototype for radar antenna.

3.   The FAA sent a technical crew to the Gibbsboro radar center and found a crack in a strut of the radar antenna used to interrogate airplanes.

4.   These advances include embedding radar antenna into the bridge instead of having sweeping antennas.

5.   Yet the war planes on the steel deck and the never-ending rotation of the radar antennas were constant reminders that this was no ordinary company picnic.