Terminator Reference: When Shane (Robert Patrick) says he doesn't care who Sarah Conner is. Patrick is known for playing the T-1000 in Terminator 2: Judgment Day (1991). Sarah Connor is the main protagonist of the Terminator franchise.
The book on which this season is based, 'Bad Luck and Trouble,' is set in Los Angeles with a brief detour to Las Vegas. The show is set primarily in New York with Atlantic City filling in for Vegas.
Calvin Franze is wearing the same unit insignia on both sleeves, meaning he is presently assigned to the same unit in which he was deployed overseas and in which he served in combat. Army uniforms display the present unit insignia at the top of the left sleeve, and at the top of the right the trooper may wear any unit insignia in which he served in combat.
8197 as Reachers ATM pin is explained in the book as 81 is a number in which the sum of both digits equal the square root of the number. (8+1=9 which is the square root of 81) and 97 being the largest 2 digit prime number.