This level of LE activity has been a topic here before, IIRC over the use of SWAT teams, but the relevant thread eludes me.

Perhaps Erich Simmers will be able to comment? He has an interest in SWAT teams, albeit in a different context - on campus.

As this raid was part of two-state LE operation one wonders whether this was Leawood PD's only contribution?

The unstated implication is that Leawood PD relied on information from a gardening supplier's records; I would suggest another source is a call to Crimestoppers, quite possibly by a neighbour, someone with a grudge and of a classic "2+2+100".

Incidentally Leawood PD have an online public survey:http://www.surveymonkey.com/s/JSN6D85