Maj Day graduated from the United States Naval Academy with Bachelor of Science degree and was commissioned as a Second Lieutenant in May 2009.  After completing The Basic School and Air Support Control Officers Course, she was transferred to Marine Air Support Squadron 1.

In February 2010, 2ndLt Day reported to MASS-1 aboard MCAS Cherry Point and served on various exercises.  In February 2011, 2ndLt Day deployed with Marine Air Control Group 28 to Afghanistan ISO Operation Enduring Freedom where she earned her controller qualifications and was promoted to First Lieutenant.

In March 2013, 1stLt Day deployed with the 26th MEU as the Air Support Element Officer in Charge (OIC) to Fifth and Sixth Fleets areas of responsibility aboard the USS KEARSARGE (LHD-3).  Halfway through the deployment, 1stLt Day was promoted to Captain. 

In December 2013, Capt Day returned to MASS-1 where she served as the Weapon Tactics and Training OIC and Air Support Company Commander.  During this tour Capt Day earned her Senior Air Director qualification and attended the Weapons and Tactics Instructor (WTI) Course.  In May 2015, Capt Day was selected for the Leadership Education and Development Program through the Commandant’s Career-Level Education Board.

In April 2015, Capt Day reported to the United States Naval Academy as part of the LEAD Program where she earned her master’s in leadership from the University of George Washington.  During this tour Capt Day served as Second Company Officer and the Executive Assistant to the Brigade of Midshipmen Commandant.  During this tour Capt Day was recognized as Company Officer of the Year for 2017-2018.

In July 2019, Maj Day was transferred to Manpower Management Division under Manpower & Reserve Affairs where she served as the Military Awards Deputy Branch Head and fleeted up to Branch Head. 

In June 2022, Maj Day reported to MACG-38 on MCAS Miramar to serve as the Plans Officer.  During this tour Maj Day assisted MACG-38 and MASS-3 begin the MAOC transformation efforts, in conjunction with Headquarters Marine Corps.

In June 2023, Maj Day reported to MASS-3 and served the Operations Officer.  In June of 2024, she assumed her current billet as the MASS-3 Executive Officer.  Maj Day’s personal awards include the Meritorious Service Medal, Navy and Marine Corps Commendation Medal, and the Navy and Marine Corps Achievement Medal.  Maj Day is a graduate of Expeditionary Warfare School (Non-resident) and Command and Staff College (Blended Seminar). 

Maj Day is married with two children.