SIMI VALLEY, CA -- The first fruits of the Defense Department's high-profile Rapid Defense Experimentation Reserve -- nearly two years in the making -- are at risk of stalling out due to budget uncertainty, potentially slowing delivery to combatant commanders of new capabilities recently validated through experimentation earlier this year as having warfighting utility. A classified meeting of the deputy defense secretary’s management action group (DMAG) recently validated an inaugural cohort of projects -- three classified capabilities for procurement but...