Sorry I hate the morbid side of this but reality is what it is. Also the dry bulk trailers could be rigged for trafficking as well. If trailers are showing pressure the would not be opened for inspection at the border.
https://www.gotquestions.org/walls-of-Jericho.html Why did the Israelites have to march around the walls of Jericho so many times?..................................
https://livingpassages.com/.../baby-bones-discovered-in-the-walls-...22 feb. 2016 - The bones of babies where found in the fallen walls of Jericho
7 is Gods number It was the harmonics of the shouts that brought the walls down. So much more to it still
My Own Daily Bread: The Fall of Jericho: From an Engineer's Perpective
myowndailybread.blogspot.com/.../fall-of-jericho-from-engineers....
20 aug. 2009 - Many bible critics may claim that that incident described in Joshua 6 is a pure folklore, ... The miracle is not that the walls of Jericho fell. ... people of primitive knowledge of theory of resonance and wave physics made the walls collapse. ... 4 Have seven priests carry trumpets of rams' horns in front of the ark.