Sierra Nevada Corp., Sparks, Nevada, received a ceiling increase (P00010) in the amount of $16,800,000 on contract H92401-18-D-0006 to accommodate for the higher than anticipated proliferation of the Tactical Radio Application eXtension (TRAX) software throughout the U.S. Special Operations Command (USSOCOM) Special Operation Forces (SOF) community and increasing support requirements for TRAX software modifications, complex integration, and training related tasks with Sierra Nevada Corp. The contract modification increases the maximum contract ceiling value from $47,000,000, to $63,800,000. No funds are being obligated via this modification. The current five-year period of performance from Aug. 24, 2018, to Aug. 23, 2023, remains unchanged. The majority of the work will be performed in Sparks, Nevada. This contract modification was awarded through Other than Full and Open Competition under 10 U.S. Code 2304(c)(1). USSOCOM headquarters, Tampa, Florida, is the contracting activity.