Katie Brown assaulted at The SGC

[red-day-dawning.livejournal.com]

There were SGA as well as SG1 characters in this story. Katie Brown was assaulted by an away team member who had been influenced by an alien substance. A SF witnessing the assault did nothing to help, justifying his behaviour in various creepy ways.
John Sheppard is furious with the SF. I think Sheppard is second in command.
I read this really recently, am kicking myself because I did not bookmark.