Homeland security and virtual reality: building a Strategic Adaptive Response System (STARS).

The advent of the Global War on Terrorism (GWOT) underscored the need to improve the U.S. disaster response paradigm.

SEM/EDS comparison of polar and seasonal temperate ice.

We have developed a method employing a scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy for examining uncoated ice specimens. By permitting the ice to sublimate in the SEM at temperatures between -115 degrees and -60 degrees C, enough ions are produced to prevent specimen charging. The absence of a conductive coating permits both the acquisition of uncompromised X-ray spectra, and a dynamic view of impurities as the ice sublimates.