21.   NASA may begin to scale back the scope of future missions and search for ways simply to ensure a mission may succeed, Pilcher said.

22.   NASA plans to fly the lighter tank on most future missions.

23.   On future missions, NASA might send a group of small, cheap hoppers to establish local communications networks or investigate hazardous terrain for signs of fossil life.

24.   Pentagon officials have declined to discuss future missions, including any that could involve special operations troops on the Kitty Hawk.

25.   Psychological problems could endanger crews on future missions, Santy said.

26.   Should future UN missions take on more tasks?

27.   Several of the advances, including the engine, are being considered in proposals for future missions, he added.

28.   The information gathered will help decide where to send future missions to Mars.

29.   The meeting, which is likely to focus on the current crisis in Yugoslavia and shaping NATO for future peacekeeping missions, continues through the next day.

30.   The occupants of the two spacecraft are prepared for five days of cargo exchanges and medical experiments that are a cornerstone of future joint missions.