John and Cindy Gladden, Marthasville, announce the engagement of their daughter, Emily Gladden, Liberty, to Mark Johnson, St. Louis, son of Glenn and Vivien Johnson, Decorah, Iowa.

Emily is a 2002 graduate of Washington High School and a 2011 graduate of University of Central Missouri with a bachelor’s degree in crisis and disaster management. She is employed by Community America Credit Union in Lenexa, Kan., as a loss prevention representative.

Mark is a 2004 graduate of Bear Creek Academy, Bemidji, Minn. He received his bachelor’s degree in biology from the University of North Dakota in 2008 and his physics degree from the University of Minnesota in 2010. He received his master’s degree in physics at Washington University in 2012 and is currently studying for his doctorate.

The couple plan an Aug. 17, 2013, wedding at Charrette Baptist Church in Marthasville. They will make their home in St. Louis.