 Complete the following phrase:  PackBot is a series of military robots by Endeavor Robotics previously by iRobot, an international robotics company founded in 2016, created from iRobot, that previously produced military robots since 1990. More than 2000 were used in Iraq and Afghanistan. They were also used to aid searching through the debris of the World Trade Center after a hrefSeptember201120attacks911a in 2001. Another instance of the PackBot technology being implemented was to the damaged 