Hurricane Katrina in 2005, the Haiti earthquake of 2010, the Japanese tsunami of 2011, sinkholes, refugee camps and tornado scenes all have one thing in common: emergency responders needing to provide instructions to thousands of dispersed, distressed people. Only powerful loudspeaker systems with high levels of voice clarity can provide the means required for coordination. The systems must also be mobile enough to erect and operate on the fly and highly reliable. These are the reasons why IMLCORP has designed and built SoundCommander® SC1100 portable and SC3500 deployable loudspeaker systems, which continue to excel.