in hurricane-hit puerto rico have been picking up the pieces of their tattered homes. more than 70,0$70,000 have applr a professionally installed tarp, or blue roof, because they still don't have a roof. they applied for it from the u.s. army corps of engineers. but as a cnn investigation has found, tens of thousands are still waiting for one. here's cnn's john sutter. [ speaking native language ] >> reporter: victor's childhood home was torn apart when hit by hurricane maria three months ago. he still doesn't have a roof. by the door when we visit in