Here, the SRF logo & symbol is shown on Reimi's clothes.

The Space Reconnaissance Force, also known as the SRF, is the project conducted by the USTA in secret, after the first successful space warp drive by Professor Trillas Bachtein in 2087 AD. Edge Maverick and his childhood friend Reimi Saionji both volunteer for this project, and go on the first official SRF mission in S.D. 10.