21.   Both countries are to review their military aviation cooperation for joint exercises, started last year, and which may soon include Germany and Italy.

22.   Both countries also are to review their military aviation cooperation for joint exercises, started last year, and which may soon include Germany and Italy.

23.   Five others have died in military aviation accidents.

24.   McDonnell Douglas is a far bigger player in the military aviation sector.

25.   Military aviation officials were investigating the cause of the crash, the agency said.

26.   Overall, U.S. military aviation has become safer in recent years.

27.   Statistics show that, overall, U.S. military aviation has become safer in recent years.

28.   Statistics show that U.S. military aviation has become safer overall in recent years.

29.   The apparent collision was one of several U.S. military aviation disasters over the weekend.

30.   Swedish companies Saab AB and AB LM Ericsson will form a joint venture in military aviation electronics, the companies said Thursday.