Abstract: Described are chairs having a seat with a sitting location above the floor, a base that sits on a floor, a lift connecting the seat and the base, the lift capable of moving the seat up and down from the sitting location to a lower location at the floor, and a control system operating the lift. The control system allows an occupant of the chair to move the seat between its sitting location and the lower location at the floor to enable the occupant to pick up or place an item on the floor while sitting in the chair and thereafter to move the seat upwardly.

Abstract: Spray array apparatus which includes a plurality of water and air carrying spoke members extending radially from a central fluid distribution assembly. The spoke members are connected to a plurality of water and air carrying strut members. The spoke members are divided into segments and the segments and strut members are detachably joined together by means of manifold joints which have water and air passageways allowing fluid communication between spoke segments and strut members. The apparatus is towed at the end of a boom of a tanker aircraft and is connected to the boom by means of a gimbal allowing two degrees of freedom to reduce bending moments and connection stresses. Selected fluid parameters are transmitted to the tanker aircraft to adjust fluid flow, if necessary.