panels are interchangeable with other floor panels and generally sturdy being formed of a metal frame such as aluminum steel other suitable material with a wooden or composite floor each floor panel 102 is designed to withstand tactical training on the first level or the second level of rhu 100 referring now to fig4 the underside of the floor panel 102 is shown where adjustable foot module 104 is inserted into a receiver formed in the floor panel 102 and secured by a set screw 106 the adjustable foot module 104 can be used on any corner of any floor panel 102 in use referring to fig5 the underside of a floor panel 102 is shown with four adjustable foot modules 104 inserted into a receiver and secured allowing the user to level the floor panel on the terrain each of the floor panels is individually leveled with the adjacent floor panels 102 to maintain a flat platform on which to construct the remainder of the rhu 100 referring to fig6 the tool 107 is inserted and engages with the adjustable foot module 104 to adjust the height and level of the floor panel 102 tool 107 is a notionally a common ratchet set with a hex tool similar to an allen wrench and will be used throughout construction of the rhu 100 referring to fig7 multiple floor panels 102 can then be leveled and attached.