<blockquote><font class="small">Quote:</font><hr>This is nothing but speculation, but could old Sinclair be referring to the dark future that young sinclair saw where the shadows or their minions attacked B5?<hr></blockquote>
I don't think so, since the old Sinclarir would know that that future had been averted. (Indeed, I don't think that in "B2" that future was even envisioned.) JMS has said that in the story as it is Sinclair's line refers to his attempt to warn Garibaldi to "watch his back." Which doesn't explain why Sinclair says "I tried to warn them", but if that's what JMS says, I'll have to go with it.
Regards,
Joe