0001021408-01-509427 S-4/A 3 20011106 NORTHROP GRUMMAN CORP /DE/ 0001133421 3812 954840775 DE 1231 S-4/A 33 333-61506 1776299 1840 CENTURY PK E C/O NORTHROP GRUMMAN CORP LOS ANGELES CA 90067 3105536262 1840 CENTURY PARK EAST C/O NORTHROP GRUMMAN CORP LOS ANGELES CA 90067 NNG INC 20010129 S-4/A 1 ds4a.txt AMENDMENT # 4 TO THE S-4 EX-24.2 3 dex242.txt POWER OF ATTORNEY EX-24.3 4 dex243.txt POWER OF ATTORNEY