Ron Glass passed away at age 71 on Friday. The actor was best known for his roles of Detective Ron Harris on ‘Barney Miller’ and Shepard Derrial Book on the Fox series ‘Firefly’ and it’s followup movie ‘Serenity’. Glass was no stranger to the genre though, with appearances in “Marvel’s Agents of S.H.I.E.L.D” and “Star Trek: Voyager”. He also provided voice work in the video games “Ancient Space” and “Fable 2″. My condolences to his family and friends.