A vessel, such as a wing-integrated aircraft fuel tank. The Amygel comprises a dispersed phase, and a dispersion medium consisting substantially of an organic solvent. The command detection unit is the input interface for the spelling robot that accepts the \u201cword\u201d to be spelled. The skirt’s distal edge is securable to a ground surface such that the skirt may be extended outwardly from the top perimeter edge of the shell to a ground surface at a slope sufficiently gradual to minimize shadows and blend more naturally into outdoor environments. The weights are installed at regular intervals on the track and can be adjustable so that more or less weight can be added as desired.