An emergency device includes a housing having a lamp end and a rear distal end, with a gripping area therebetween. The unit may reduce power consumption within the 3D-RAM by performing partial block write-back according to status information stored in an array of dirty tag bits. A compile unit is formed from the extracted source code and metadata. The FC device includes a huntite-type aluminum double borate nonlinear optical material configured to produce FC light having a wavelength between 190 and 350 nm and a composition given by RAl3B4O12, where R comprises one or a plurality of elements {Sc, La, Y, Lu}. In a particular implementation, the movable contact that engages the blocking member \u201cbounces\u201d in a second direction after contacting the blocking member.