David Wellington mentions the last time the military executed one of its own. Army Pvt. John Bennett was hanged in 1961 at Fort Leavenworth prison in Kansas, convicted of raping and attempting to kill an 11-year-old Austrian girl.
Carrie's aborted meeting is staged at the historic Jefferson Hotel in Richmond Virginia established in 1895.
At approximately the 18:20 mark, Sharon connects to the internet via some proxy. The text that shows up on her screen is in Hebrew. It translates to "anonymous internet", "secure mode", "active", "connected", "rerouting", "second password". That may be a slight nod to the series being based on an Israeli series.