Rob Pincus explains the advantages of a muzzle low ready position, especially in an extreme close quarters situation. The low ready position allows for more efficiency and consistency when moving into a shooting position and for dramatically more control if your rifle is ever grabbed by an attacker.
Instructor Don Edwards discusses and demonstrates the differences between shooting with a bipod and shooting from an improvised rest. Both methods can dramatically increase deviation control, but the improvised rest techniques are much more versatile and universal.
Rob Pincus discusses the risks of firearm training with real props or in around real objects, such as vehicles. Remember that anything in the training environment can be damaged and any PERSON in the training environment could get hurt. Pushing yourself during training can have tragic consequences if you are not training responsibly.