Long field exercises, deployments led to low morale in missing soldier’s unit, investigators say February 6 Pvt. Richard Halliday joined the Army in 2018, serving as a Patriot missile maintainer. His current whereabouts is unknown. (Find Richard Halliday cause/Facebook) The leaders of a Patriot missile battalion at Fort Bliss, Texas, where a soldier has been missing since July, were cleared by an investigation of allegations that their command climate pushed troops to go AWOL. But investigators did determine that soldiers were pushed to their limits and had poor morale due to a high training tempo that began after events in the Middle East necessitated the unit be ready for deployment earlier than originally expected.