The<unk>  is a Military<unk> s of the United States of the United States armed forces which is issued by the United States Air Force and United States Navy.  The<unk>  has existed since World War II, when the decoration was first created as the United States Army Air Forces<unk> .
The<unk>  is issued in two different versions, one for the Navy and the other for the Air Force.  To be awarded the<unk> , a service member must be a commissioned officer and a Registered<unk>  and must also complete training normally befitting the award of the Aircrew<unk> .  Upon completion of prerequisite training, a service member must complete advanced studies in Aerospace Medicine and be qualified as a military<unk><unk> .  The<unk>  is then presented after a probationary period of in-flight instruction and observation.
The Air Force version of the<unk>  is issued in three degrees: Basic, Senior, and Master.  The Basic<unk>  is awarded upon completion of all training and qualification as a<unk><unk> .  The Senior and Master versions of the<unk>  are awarded based on years of service in the Air Force and number of<unk>  hours obtained.  The different degrees of the<unk>  are denoted by a star (Senior level) or a star with wreath (Master level) centered above the decoration.
The United States Navy issues the<unk>  in a single degree.  None of the other military branches maintains an equivalent to the<unk> .  The decoration is similar to the<unk>  surgeon<unk> .
Flight nurse badge
Camp Setebaid
Ventouse
Tanning booth
Gaslighting
Firefighter
Unitaid
Eugen Bleuler