Rockwell Collins Inc., a part of Collins Aerospace Government Systems, Cedar Rapids, Iowa, is awarded a $34,272,238 modification (P00009) to a previously awarded cost-plus-fixed-fee contract (N0001922C0045). This modification exercises options to continue critical design analysis and solution trade studies for an updated Very Low Frequency (VLF) solution in support of the developmental design and obsolescence mitigation engineering efforts for the airborne VLF system modernization in support of the E-XX program capability requirements for the Navy. Work will be performed in Richardson, Texas (90%); and Cedar Rapids, Iowa (10%), and is expected to be completed in January 2025. Fiscal 2024 research, development, test, and evaluation (Navy) funds in the amount of $2,910,000 will be obligated at the time of award, none of which will expire at the end of the current fiscal year. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.