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Photo by: Steven Senne

In this Thursday, Feb. 6, 2014 photo, a slice of prototype pizza, in development to be used in MRE's — meals ready to eat, sits in a packet next to a smaller packet known as an oxygen scavenger, left, at the U.S. Army Natick Soldier Research, Development and Engineering Center, Thursday, Feb. 6, 2014, in Natick, Mass. Pizza is in development to be used in individual field rations known as meal ready to eat, or MREs. It has been one of the most requested options for soldiers craving a slice of normalcy in the battlefield and disaster areas. (AP Photo/Steven Senne)

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