S.W.A.T. Season 8 Episode 22 Return to Base

The SWAT team undertakes its final mission when a violent crew of ex-pat Russian mercenaries holds Los Angeles hostage after planting hundreds of hidden explosives across the city in a bid to extort the release of their brutal leader, Dmitri Rykov. When Rykov is brought to SWAT for safekeeping, SWAT HQ comes under attack, forcing Hondo and 20-Squad to fight for their very survival, in the second part of the two-hour series finale.