▁March ▁ 2 0 1 0 , ▁and ▁consequ ently ▁the ▁comm issions ▁of ▁the ▁existing ▁ 1 0 , 0 0 0 ▁commission ed ▁corps ▁I RC ▁officers . ▁The ▁Office ▁of ▁Reserve ▁Affairs ▁( OR A ) ▁sent ▁letters ▁to ▁those ▁individuals , ▁not ifying ▁them ▁of ▁their ▁change ▁of ▁status . ▁ ▁The ▁I RC ▁served ▁as ▁an ▁asset ▁for ▁the ▁commission ed ▁corps . ▁In active ▁res erv ists ▁volunt arily ▁activ ated ▁to ▁provide ▁over ▁ 3 , 0 0 0 ▁active - d ut y ▁days ▁ann ually ▁for ▁routine ▁and ▁public ▁health ▁emer gen cies ▁including ▁during ▁H urr icane ▁K atr ina ▁and ▁other ▁emer gency ▁response ▁miss ions ▁and ▁in ▁providing ▁sur ge ▁capacity ▁for ▁numerous ▁short ages ▁in ▁isolated ▁and ▁hard ship ▁unders erved ▁areas . ▁In active ▁res erv ists ▁also ▁played ▁roles ▁in ▁the ▁human itar ian ▁ship board ▁training ▁miss ions ▁with ▁other ▁uniform ed ▁services . ▁ ▁Congress ▁established ▁the ▁Re ady ▁Reserve ▁Corps ▁to ▁ful fill ▁the ▁need ▁to ▁have ▁additional ▁commission ed ▁corps ▁personnel ▁available ▁on ▁short ▁notice ▁to ▁assist ▁Reg ular ▁Corps ▁personnel ▁to ▁meet ▁both ▁routine ▁public ▁health ▁and ▁emer gency ▁response ▁miss ions . ▁The ▁Re ady ▁Reserve ▁Corps ▁officers ▁will ▁be ▁available ▁and ▁ready ▁for ▁invol unt ary ▁calls ▁to ▁active ▁duty ▁during ▁national ▁emer gen cies ▁and ▁public ▁health ▁cr ises . ▁ ▁Because ▁of ▁the ▁changes ▁in ▁the ▁law , ▁a ▁Re ady ▁Reserve ▁Corps ▁Working ▁Integr ated ▁Project ▁Team ▁(