US Navy CMU-37 and 38 Prototype Aircrew Endurance Armor Plate Bags (2011)

Body Armor, Experimental, Trials, and Prototypes, Modern (1990 - Present), United States, War on Terror, War on Terror (2001 - 2021), Webbing

Sample 1:

Possibly prototype of removable plate bags that did not make it into the final Aircrew Endurance vest.  Made of lighter weight (500D cordura?) Coyote Brown material. Has hand-written labeling like other modern prototype/test items (source: http://webbingbabel.blogspot.com/2016/08/prototype-sample-orc-industries-level-5.html).  CMU-37 is for crew and CMU-38 is for (co)pilot (source: http://www.usmilitariaforum.com/forums/index.php?/topic/330974-cmu-37-and-38-prototype-body-armor-pouches/).

Arms on Backside:

It is unclear what these attach to since the platebags were not found with any other components.

Plate Bag Openings:

Final Aircrew Endurance Vest:

Naval Air Station Patuxent River, Maryland, December 18, 2013: Marines demonstrate the redesigned aircrew endurance survival vest, with improved ballistic protection, superior load distribution and a new universal color for deployment in a wider variety of terrains. The vest attained initial operational capability Nov. 27, a key milestone for Naval Air Systems Command’s Aircrew Systems Program Office based at Naval Air Station Patuxent River, Md. (121217-N-JQ696-001; U.S. Navy photo by Kelly Schindler)[1]

Image above from this article[1] about the vest: