A study of wounds incurred by members of combat crews showed that nearly 70 percent were caused by missiles of relatively low velocity.

He led the way in developing a light body armor and steel helmet that saved many lives and materially improved combat crew morale.

In May 1944, General Grow was awarded the Distinguished Service Medal for developing a device to protect gunners from windblast; electrically heated clothing, gloves, boots, handwarmers and casualty bags for wounded; wind and fire resistant face and neck protectors; and a special combat ration for use on long bombing missions.

Just prior to his retirement, he received an oak leaf cluster to his Distinguished Service Medal for his efforts in promoting the study of aeromedicine, airborne medical equipment, and organizational planning.

New York: D. Appleton-Century company, 1941 This article incorporates public domain material from the United States Air Force