Buying drugs there is a good reason to execute a search warrant, but do the raid at the time of the purchase; use a dog to find the rest of the stash.
http://www.palmbeachpost.com/news/content/shared-gen/ap/National/Elderly_Shootout.html I didn't know if I could post the article. Who is Sam? Supposedly her 75 y/o niece is her only relative.
She looked healthy and happy. A shame to live to your 90's and get killed like this.
She could have seen these guys buying drugs from this Sam, on her property and thought they were drug dealers too.