It sure looks like Google Earth, but it's not.
A company called Sentinel, funded by the U.S. Defense Department, has posted a demo of its client software on YouTube that shows the viewer flying through 3D cityscapes with live videos embedded in them.
A higher-quality version is on the Sentinel site.
The software, AVE Video Fusion, "combines Google Earth-like features with live camera videos projected on a 3D model" the video caption says. "This program is NOT Google Earth. It is written from scratch using C++ and OpenGL." It runs on PCs and requires no custom hardware.
Applications include wide-area surveillance systems such as those at military bases, airports, railroad stations, borders, coastlines, harbors, and power plants, according to Sentinel's site.
The El Segundo, Calif.-based company was founded in 2005 by computer science and electrical engineering professors at the University of Southern California.
Here's the five-minute YouTube video: