The Army Public Health Center's Headquarters and Headquarters Company held a change of command ceremony July 6. During the ceremony, Capt. Diana M. Rommelfanger-Konkol replaced Maj. Ryan J. Lindell as commander of the HHC.Lindell held the position of HHC commander since May 2016. He previously served as project team leader for the Drinking Water Quality Branch in the Environmental Health Science and Engineering Directorate from 2013-2016. Prior to his assignment at APHC, Lindell served as the Brigade Environmental Science and Engineering Officer for the 125th Brigade Support Battalion, 3rd Brigade, 1st Armored Division, in Fort Bliss, Texas from 2011-2013. From 2011-2012, Lindell was deployed to Afghanistan in support of Operation Enduring Freedom.Rommelfanger-Konkol most recently served as the Chief of the Nerve Agent Countermeasures Program at the United States Army Medical Research Institute of Chemical Defense (USAMRICD). She previously served as a biochemistry and physiology officer in the Department of Pathology and Laboratory Sciences at Landstuhl Regional Medical Center in Germany. While at LRMC, she also served as the Assistant Chief of Laboratory Compliance, Central Processing Officer in Charge and Clinical Chemistry Officer in Charge.The host and reviewing officer for the ceremony was U.S. Army Medical Command Troop Commander Col. Bonnie Harstein, who remarked that Lindell's personality was always uplifting. The first sergeant for the ceremony was James Mitchell and Maj. Donnell Barnett led the invocation.The ceremony was a well-attended event, with a mix of military personnel, civilians, family and friends present. Some notable leaders in attendance included Col. Jennifer McDannald, APHC deputy director, Sgt. Maj. Raymond Dues, APHC's senior enlisted advisor, and Col. Margery Hanfelt, commander of USAMRICD.Lindell thanked his family, fellow Soldiers and colleagues. He welcomed Rommelfanger-Konkol to the APHC family, and left her with some pillars of advice he learned from his time in command, saying "stay present, consistent and persevere through whatever may come."Rommelfanger-Konkol thanked the APHC chain of command for this new opportunity and also Lindell. "Please know I do not take the care and well-being of you lightly," she told the Soldiers of APHC. "Being there and taking care of my family is non-negotiable, and as of today, you are all part of my family. I am immensely thankful for this opportunity and I am looking forward to serving and learning from all of you."