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Which two airplanes were built to fly very high over other countries to watch from above?

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  1. The U-2 and the SR-71
  2. The B-2 and the F-117A
  3. The 707 and the 727

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References

  1. Aerospace: The Journey of Flight, Teacher's Guide (Civil Air Patrol) www.gocivilairpatrol.com/media/cms/2nd_edition_Teachers_Guide_5D3166D76F9B1.pdf Checked 2026-10-10.
  2. Aerospace: The Journey of Flight, Teacher's Guide (Civil Air Patrol) www.gocivilairpatrol.com/media/cms/2nd_edition_Teachers_Guide_5D3166D76F9B1.pdf Checked 2026-10-10.

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