Daniel's engineering program is NOT at the Walter Reed Army Institute of Research (in MD), but at (metro accessible!) George Washington University. Here's a description from the program's website:
Intermediate Engineering GEMS:
A two week course for rising 9th, 10th and 11th graders that focuses on design, prototyping, and analysis principles of engineering. Students work in teams to create solutions to real-world problems. Students are exposed to more rigorous mathematics and physics and work with the near-peers to achieve the goals of the projects. Students are also expected to present their work, introducing them to professional communication and building leadership skills.