Another 1,500 are expected to leave in the next two years, the spokeswoman said.
A decision is expected in the fall, a spokeswoman said.
A spokeswoman for United said the price would be nearly $100 million.
His spokeswoman said he had to get back to the war.
The spokeswoman could not say how many were now in the program.
An American military spokeswoman said she had no information on the case.
But a spokeswoman said a decision was still a long way off.
He died of cancer, a spokeswoman for the family said.
He died of a heart attack, a spokeswoman for the family said.
The cause was a heart attack, said a spokeswoman for the university.