Liam Hemsworth (Sgt. Kinney) is, in real life, the brother of Luke Hemsworth (Sgt. Abell). Luke has previously appeared alongside his brother Chris Hemsworth in Thor: Ragnarok (2017) and Тор 4: Махаббат және Найзағай (2022), which means Liam and Chris remain the only siblings yet to appear in a film together.
Captain Eddie Grimm (Russell Crowe) discovers that he and Kinney (Liam Hemsworth) both hail from Ohio. He asks Kinney whether he has ever been to Mama Santa's on Mayfield. Mama Santa's is an actual, award-winning Italian eatery located in Cleveland, Ohio's Little Italy neighbourhood and remains in operation today. It is regarded as one of Cleveland's finest pizzerias.
Russell Crowe has shared the screen with all three Hemsworth brothers: Liam Hemsworth in Poker Face (2022), Luke Hemsworth in Тор 4: Махаббат және Найзағай (2022) and Chris Hemsworth in Thor: Love and Thunder.
The film makes multiple references to "Tier One" units. Tier One, or Special Missions Units (SMUs), are the US military's most elite formations and include the Army's Delta Force (also styled "1st Special Forces Operational Detachment—Delta") and the Navy's SEAL Team Six (formally the "Naval Special Warfare Development Group", commonly known as "DEVGRU"). Less widely known is that the US Air Force also fields its own Tier One unit: the 24th Special Tactics Squadron (24STS). The 24STS comprises specialities such as Pararescue, Combat Controllers, Special Reconnaissance and Tactical Air Control Party; its personnel are also trained in ground combat — covering direct action, counter-terrorism, counter-insurgency, hostage rescue and special reconnaissance — to a standard on a par with other Tier One units. While every service has personnel qualified as JTACs (Joint Terminal Attack Controllers), as was Sgt. Kinney, the 24STS would typically supply the Air Force members attached to a Delta or SEAL Team Six element. Similarly, just as Green Berets (US Army Special Forces) are not all members of Delta, and many Navy SEALs are not in ST6, there are airmen trained in those specialities who are not part of the 24STS.
Not long after Sugar is killed, a scene showing Reaper in a supermarket contains a close-up of an energy drink labelled "no sugar".
