In February 1991, a year after his father died, and nine months after the death of his mother, Armstrong suffered a mild heart attack while skiing with friends at Aspen, Colorado.
Bulan Februari 1991, setahun setelah ayahnya meninggal dunia, dan sembilan bulan setelah ibunya meninggal dunia, Armstrong mengalami serangan jantung ringan saat berski dengan teman-temannya di Aspen, Colorado.