21.   It was the first time such testing had been used in a commercial airplane crash in the United States.

22.   It is believed to be the first time in U.S. aviation history that criminal charges were filed against maintenance workers after an airplane crash.

23.   Louis Sullivan, former Secretary of Health and Human Services in the Bush administration, compared the massacre to an airplane crash that leads to reforms in air safety.

24.   Martin, of course, will be hurting this weekend, grieving the deaths of his father, stepmother and a half sister in an airplane crash.

25.   Ms. Snow founded a nonprofit group and an Internet website to reachout to mourners who lost friends or loved-ones in airplane crashes.

26.   Nance may be associated with airplane crashes, but his own career in the cockpit has seen few crises.

27.   On Wednesday, the NRC maintained that reactors are hard targets even though it has not evaluated whether they could withstand an airplane crash.

28.   Pleas for justice are routine after an airplane crash, and they are generally played out in civil courts, where survivors and relatives of victims sue for damages.

29.   She died in an airplane crash while trying to become the youngest pilot to fly across the United States.

30.   She has now focused her deconstructive powers on airplane crashes, theorizing that electromagnetic inference was responsible for three recent disasters involving TWA, Swissair and EgyptAir flights.