UPDATED with additional reaction: It is a day of mourning on the sets of NCIS and NCIS: New Orleans where the casts and crews are trying to come to grips with the devastating news about the sudden death of the series’ executive producer Gary Glasberg. Here is the statement released on behalf of the actors and crew members of mothership NCIS, on which Glasberg served as showrunner, followed by messages by current and former cast members of the venerable drama series.

Gary was our rock, our cheerleader, our team captain. He inspired us with his leadership, his creative instincts and keen insight. NCIS will not be the same without him, and each of us will miss his smiling face and unwavering humor, which lifted us every day.

Cote de Pablo, who co-starred on NCIS from 2005-2013, released the following statement to Deadline: “I worked with Gary Glasberg for years during my time at NCIS. The news is shocking and sad. My thoughts and prayers are with his wife and his two kids, with the cast and crew…..I will remember him by his great big smile.”

Here are more remembrances from former NCIS co-star Michael Weatherly and current co-stars Pauley Perrette, who has been on the show since the beginning, and recent cast addition Wilmer Valderrama.

What sad a day this is. Gary Glasberg was a gentle man and gentleman loved by so many people. Send your love to his family. — Michael Weatherly (@M_Weatherly) September 28, 2016

Our hearts are collectively broken. Our #NCIS show runner and boss Gary Glasberg has passed away. In shock and sadness. There are no words. — Pauley Perrette (@PauleyP) September 28, 2016