I'm thinking that Sprint has made a deal with Meijer to put roof top small cells on their stores because I passed by a Meijer on the west side and went into a Meijer on Lake Lansing and SCP showed small cell each time. My signal peaked at -54dBm at times around the store on Lake Lansing.
Interesting survey results by HarrisX:
News Article: 22% of Americans support Sprint/T-Mobile merger, 59% on the fence
Company Blog Post: http://harrisx.com/2018/05/us-consumers-open-to-tmobile-sprint-merger/
Full Survey Results: http://harrisx.com/wp-content/uploads/2018/05/HXO002-TMobile-Sprint-Merger-05.20.18-vFinal.pdf