Regarding the fact that we are in the 11th year from those sad acts, I was looking between some shots from those days here in the database and I found this shot of a lot of planes grounded at YHZ.

Photo © Halifax International Airport
It came to my mind that it must have been a "head-cracking" day for flight dispatchers, getting all those large amounts of plane grounded and getting them back to the air when the air-space closure ceased.
Knowing that we have a large amount of flight ops workers in the site, I wanted to ask you about your personal experience. How hard was it to manage all those large amounts of planes needing to be grounded immediately?
I'm sure I'm not the only one interested in this and we'll be very thankful with your sharing.
Regards,
Jarib.