Testing Tom

I'm just going to describe what I would do, aha.

Part A - Tom has always been a bit of an aggressive wolf. He would most likely confront the she-wolf and ask her to state her business. If he didn't get a reasonable response he would remove the stranger from the pack's land. While he would attempt to move the stranger peacefully but, if needed, he would remove them with force. Being the strong and athletic wolf he is, he often uses pure brute strength to his advantage. I often use this strength in a way that would temporarily immobilize something. An example of this would be biting joints (carpals, radius, etc.) or pinning down others.

Part B - Similar to Part A, Tom would use his brute strength to get the elk into a weak and or vulnerable position. But different from other wolves, Tom would try and drag the elk down by the neck. He often will grab ahold of elk or moose necks and sides in an attempt to let his other pack mates get bites in. The often proves more successful while hunting in a group, but Tom also can hunt alone with a decent success rate. 

Part C - Tom is loyal to his pack, so if his alpha has asked him to do something he will do it without question (unless it's something like a murder of another wolf) So even if he had an acquaintance in the rival pack, he would follow his order. Even if this friend was really close, the most disloyal thing he would do would be to avoid said friend, not their pack though.