This is the Combative Measures Instructor Training (Judo) and Stead Air Force Base Student Study Guide from 1963, Stead Air Force Base.

The following is an extract from the introduction:

Presentation of Air Crew Self–Defense Techniques or Unarmed Combative Measures Training is another step the U.S. Air Force has taken to take care of its own.

The crew member plays a valuable role in the defense of our nation's heritage, and he, therefore, deserves every right to continue to enjoy this heritage. To preserve this intangible property our flyers must be able to go on to an enemy target and return. To accomplish this, our country not only provides the finest equipment available for accomplishment of the primary mission, it also provides the aircrewman with extensive knowledge of proven methods of survival and the equipment to enable him to effect a safe return in the event an emergency puts him into a survival or evasion situation.

What with training in survival on both land and water, escape and evasion, survival weapons, resistance, and unarmed combative measures, together with the maintenance of a capable rescue service, a flyer can rest assured that every means has been taken to provide for his return.

Unarmed combative measures may be considered a "last resort" method of survival. It would be good to be able to say "I won't ever have to use that," but it is much better to know that you are capable of using this "ace in the hole" if the need arises.

When all else fails, unarmed combative measures can be relied on as one more "ace in the hole" to call upon.