How about at the insurance station you can also buy Reinforcement Insurance? You pay them 10k, and you're given a Emergency Beacon, an item that when used calls two or three ships (or a corp cruiser) to your rescue.
You cannot, however, buy another while you already have one due to "limited supply"
There's also a Deluxe version costing 25k that either calls three corp cruisers or a new, Advanced Corporate Cruiser that's like, more than twice as strong. Due to even more limited supply, you can buy only one per game.
...so use it in the system just before jumping to Heretic and he'll follow. Unless you're aiming at a one-shot deal where they come, kill then leave? That would make me think twice about forking out a bit of $$$ for a temporary relief hitter.
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