How exactly would that help? Swatting is by definition fraudulent callers claiming to have firsthand knowledge of an issue -- in this case, he pretended to be a hostage taker.[1]
Better hoax detection training is a fine idea but swatters are determined adversaries. It's going to take more than just asking a couple basic questions. And since real emergencies are often signaled by imperfect and limited inbound information, there is only so much that can be done to filter out false positives. I agree with Krebs that this is primarily a matter of police use-of-force training and stronger action against swatters.[2]
[1] 911 recording starts at 10 minutes: https://www.pscp.tv/LJSNicholeManna/1lPKqponlzQxb?t=9m10s
[2] https://krebsonsecurity.com/2017/12/kansas-man-killed-in-swa...
To begin, talk of swatting someone ought not be sanctioned on these communication channels. Mod down the comments or suspend their privileges/account.
We agree, use of force is far to casual in the US, especially with the reduced rate of violent crimes.
In the time being, we could also start dealing with the false positives directly. For example, while SWAT is gearing up, the operator could ask who is calling and how they learned of the issue. Without that information, the odds of a false report go up and the trigger bias should be going down.