Col. Joshua SeGraves, Fort Belvoir Garrison commander, briefs Mount Vernon district constituents online during the annual Town Hall, Feb. 6. SeGraves noted that Walker Gate should open in the summer, and that trail improvements will also enhance the community experience. Dan Storck, Fairfax County supervisor, said he appreciated the ongoing relationship with Belvoir leadership and what a key player the installation is for both the county and Northern Virginia.