"We are devastated by this unspeakable tragedy and hold the victims' families closely in our hearts," U.S. Figure Skating said in a statement.
Two of those coaches were identified by the Kremlin as Russian figure skaters Evgenia Shishkova and Vadim Naumov, who won the pairs title at the 1994 world championships and competed twice in the Olympics. The Skating Club of Boston lists them as coaches and their son, Maxim Naumov, is a competitive figure skater for the U.S.
The FAA said the midair crash occurred before 9 p.m. EST in some of the most tightly controlled and monitored airspace in the world, just over 3 miles south of the White House and the Capitol.