[michaelbuckbee]

The choice isn't "send SWAT" or "don't respond". There are a range of actions that could be taken prior to SWAT being involved.

[gaff33]

Neither am I suggesting that "don't respond" is the right thing to do here. However SWAT teams must know that uncorroborated calls are almost certainly fake, and they should act accordingly.

Arguably regular police could check the situation out first?