 The ESPA ring's maiden mission was on STP-1 in 2007. 
, the ESPA ring had been used on all 3 EELV-class rockets (Atlas V, Delta IV and Falcon 9).Multiple ESPA rings may be used on a single launch, stacked to increase the satellite carrying capacity.Two ESPA Grande rings were used on Orbcomm OG-2 flight 1 in 2014 and three stacked Grande rings for the 11-satellite Orbcomm OG-2 flight 2 deployment in 2015.