JOHN HEINZ CRASH Members of the National Transportation Safety Board look over the wreckage of a helicopter in the school yard of Merion Elementary School in Merion, Penn., April 5, 1991. (AP Photo/Mark Lennihan) (Mark Lennihan/AP)
JOHN HEINZ CRASH Rubble from the burned airplane lies scattered in the school yard in front of Merion Elementary School in Merion, Pa., April 5, 1991. Yesterday, a plane and a helicopter collided over the school, killing U.S. Sen. John Heinz (R-Pa.) and four pilots as well as two school children in the school yard. (AP Photo/Mark Lennihan) (Mark Lennihan/AP)
JOHN HEINZ CRASH Officials place a body bag on a stretcher next to the wreckage of the plane carrying U.S. Senator John Heinz (R-Pa.) which collided in the air with a helicopter and crashed to the ground over Merion, Penn., April 4, 1991. All three people on the plane were killed as were both men in the helicopter and two children on the ground in a schoolyard. (AP Photo/Amy Sancetta) (Amy Sancetta/AP)
JOHN HEINZ CRASH Members of the National Transportation Safety Board look over the wreckage of a helicopter Friday, April 5, 1991 on the schoolyard of Merion Elementary School in Merion, Pa. On Thursday, the helicopter collided in mid-air with a small plane carrying U.S. Sen. John Heinz (R-Pa). All five men aboard the two aircraft were killed as well as two children in the schoolyard. (AP Photo/Mark Lennihan) (MARK LENNIHAN/Associated Press)
JOHN HEINZ CRASH Rubble from the burned airplane lies scattered in the school yard in front of Merion Elementary School in Merion, Pa., April 5, 1991. Yesterday, a plane and a helicopter collided over the school, killing U.S. Sen. John Heinz (R-Pa.) and four pilots as well as two school children in the school yard. (AP Photo/Mark Lennihan) (Mark Lennihan/AP)
JOHN HEINZ CRASH U.S. President George H. Bush kneels in prayer at a memorial service for the late Senator John Heinz, R-Pa., at the Washington National Cathedral, Friday, April 12, 1991. Seated behind the president are Vice-President and Mrs. Quayle. (AP Photo/Barry Thumma) (Barry Thumma/ASSOCIATED PRESS)