364-DAY CREDIT AGREEMENTdated as ofSeptember 4, 2012amongNORTHROP GRUMMAN CORPORATIONThe Lenders Party HeretoJPMORGAN CHASE BANK, N.A., as Administrative AgentCITIBANK, N.A., THE ROYAL BANK OF SCOTLAND PLC and WELLS FARGO BANK, NATIONAL ASSOCIATION,...