On the end of the episode Don Eppes is watching a old hockey game in his bedroom. Liz Warner arrives to the apartment and comes to the bedroom. When Don notices her there is sound of old picture tube television turning off. Still next time the television is seen its still on. It is also a new flat screen television that doesn't make the same sound when its turnoff as does those old picture tube televisions.
Charlie's girlfriend Amita Ramanujan (Navi Rawat) says she can use the DTMF frequency of the sat phone to trace the call. This is patently absurd. DTMF is the pair of tones used on POTS phones to dial a telephone number, they are not used at all, ever, on cellular (or SAT phones). The only time DTMF is used after a call is connected is if the caller is connected to an auto-attendant (what most businesses use) or accessing your own voicemail. DTMF would never be used for a call in progress unless you accidentally bump one of the buttons, but that didn't happen here.
The kidnappers in front of the club are using sub machine guns (later we see them clearly being Mac-10's and UZI's) but the shell casings on the pavement are elongated, like 5.56, not .45 or 9mm that the sub machine guns use.
The coordinates (N34° 38' 23" W118° 14' 34") that Amita's (Navi Rawat) sat-phone decoder finds are not in East L.A.; they're in Palmdale, about 70 mile north of Los Angeles.