Complex sentence: The building sustained heavy damage to its atrium and several upper floors during Hurricane Rita, and in 2007, the facility underwent major repairs, as well as providing security upgrades such as ballistic protection of the exterior glass walls.
Split into simpler sentences: The building sustained heavy damage to its atrium and several upper floors during Hurricane Rita. In 2007, the facility underwent major repairs and security upgrades such as the addition of ballistic protection of the exterior glass walls.