Guest Stars Seamus Dever as Deputy Director Gabriel LaRoche Demetrius Grosse as Lieutenant Merritt Hastings Sommer Carbuccia as Marine Lance Corporal Brian Zanella Boyana Balta as Emily Cross Garrett Hines as Marine Lance Corporal Samuel Cross Cameron Bender as Martin Gates Co Starring Derek Anthony as NCIS Maintenance Worker Lennox Kincaid Ramsey Thoms as Marine Lance Corporal Evan Cross
