This photo is what started the controversy of guard towers being needlessly built on public structures. FEMA Camps now come in all shapes and sizes. From the air, the guard towers stick out like a sore thumb. Walmarts are not the only structures that have been converted to FEMA camps. Whether we realize it our not, Trump just formally exposed the true existence of FEMA camps to the american people through the immigration crisis. 
http://www.thecommonsenseshow.com/trump-exposes-existence-of-fema-camps-through-the-immigration-crisis/#comment-143447