sunking

roscpp: 2
callbacks: 2
ROS: 2
subscription: 2
3D_navigation: 1
logging: 1
debug: 1
roscore: 1
1.navigation: 1
2d_naviagation: 1
nav: 1
reading: 1
build_from_source: 1
input: 1
threads: 1
asynchronous: 1