Reading between the lines on this USMC tweet
First 1-19 is 911 mirrored
It is also a date in 15 days
The guy in glasses has a Warrant Officer insignia on his collar
They are searching
Studying maps
So, first of all Collar and Warrant
When police get an Arrest warrant, they have permission to Collar, i.e. arrest the perp.
Marines might be involved if it is on a Naval/Marine base
Or if they are supporting police for a perp going up on charges before a Court Martial
Or maybe they are just there for the codes
Which suggests possibly that arrests will be made in connection with 911 on Jan 19th.
Enemy combatant status may be involved with some people
And there could be a number of people indicted
And this would be a SHOCK heard round the world
Even though many have privately concluded that it was a domestic criminal act, unrelated to Al Qaeda.