By Neil Woulfe - Radar Senior News Director
It was extremely scary.
Former First Lady Nancy Reagan -- walking slowly and using a cane -- lost her balance and fell Tuesday night as she arrived at the Ronald Reagan Presidential Library in Simi Valley, California.
Mrs. Reagan was being escorted to her seat by freshman Senator Marco Rubio (R-Florida) -- a Tea Party favorite -- who was to speak at the event.
Fortunately, Rubio, 40, sensed something was wrong and caught Mrs. Reagan before she hit the ground.
Secret Service and other crowd members quickly rushed in to assist the former First Lady to her feet and into a chair.
A library spokeswoman said she was not injured.
This is not the first time Mrs. Reagan has fallen; in 2008, she suffered a fractured pelvis in a fall that required hospitalization.
On September 7, the library will be the site of the next Republican presidential primary debate.