Similar to the canceled “9-1-1: Lone Star,” O’Donnell’s character, Capt.

Don Sharpe, will work alongside his son at the fire station.

Sonja Flemming/CBS via Getty; Disney/Justin Stephens

9-1-1: Nashvilleis starting to build its firehouse.

Chris ODonnell; Angela Bassett on ‘9-1-1’

Chris ODonnell; Angela Bassett on ‘9-1-1’.Credit:Sonja Flemming/CBS via Getty; Disney/Justin Stephens

Chris O’Donnellhas officially joined the cast of the upcoming9-1-1spinoff,Entertainment Weeklycan confirm.

Similarly toRob Lowe’s character, Capt.

Owen Strand, on the recently canceled9-1-1: Lone Star, Capt.

Sharpe will work in the firehouse “alongside his beloved son,” per a character description.

But it wouldn’t be a9-1-1show without a little darkness.

Athena Grant) also executive-producing.

Meanwhile, the mothership series (airing Thursdays at 8 p.m.