Also coming out of the MD5 NSTXL hackathon was the team from Vertical Solutions, a project to help firefighters and other first responders track their locations while moving through buildings. The team devised the solution after meeting with mentors at the hackathon from the Department of Defense and Fire Department of New York and discovering the unexpected problem that first responders have with locations tracking. For example, firefighters the FDNY currently track their locations as they move up and down floors with radios and a whiteboard because they cant relay on GPS or WiFi in distressed buildings. Vertical Solutions uses an alternative system with high-powered RFID tags that last up to 10 years placed in the stairwells of each building and scanners attached to first responders that connect to a web app. When first responders pass an RFID tag, their location is updated live on the web app.