/usr/ is in libtrajectory-msgs-dev 1.12.5-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/trajectory_msgs/
/usr/include/trajectory_msgs/JointTrajectory.h
/usr/include/trajectory_msgs/JointTrajectoryPoint.h
/usr/include/trajectory_msgs/MultiDOFJointTrajectory.h
/usr/include/trajectory_msgs/MultiDOFJointTrajectoryPoint.h
/usr/lib/
/usr/lib/pkgconfig/
/usr/lib/pkgconfig/trajectory_msgs.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libtrajectory-msgs-dev/
/usr/share/doc/libtrajectory-msgs-dev/copyright
/usr/share/trajectory_msgs/
/usr/share/trajectory_msgs/cmake/
/usr/share/trajectory_msgs/cmake/trajectory_msgs-msg-extras.cmake
/usr/share/trajectory_msgs/cmake/trajectory_msgs-msg-paths.cmake
/usr/share/trajectory_msgs/cmake/trajectory_msgsConfig-version.cmake
/usr/share/trajectory_msgs/cmake/trajectory_msgsConfig.cmake
/usr/share/trajectory_msgs/package.xml
/usr/share/doc/libtrajectory-msgs-dev/changelog.Debian.gz