LONDON, Feb. 29 - A new video surveillance system has captured the interest of military authorities after its successful use in the Iraq war. The Pentagon has ordered tests of more advanced versions for use in unmanned tanks and reconnaissance planes, encouraging the inventor, a small Scottish company, to pursue other security applications, both military and civilian. The technology, an encoding device and software developed by Essential Viewing in Glasgow, compresses video data and sends it with virtually no delay over just about any communication network, even low-capacity military radio systems. Its use in Iraq allowed commanders far from the...