manner of things that inhibit the sensor and this is something that we don't particularly control right the user is is responsible they get for cleaning the lenses but they take this drone somewhere we've never been and we asked them to wipe the thing and we and we detect these things online like that's the best thing we can do so actually as a drone is flying we look for potential issues with what the cameras see and and having dirty lenses and we have sort of we have a lot of these types of warnings but this is an