Coaches & Directors
Coaching Staff

Sean Marshall

Head Coach


Sean an  ASCA Level 4 Coach (Level 5 educated), began his professional coaching career as the Head Age Group Coach of the City of Mobile Swim Association in Mobile, AL after graduating and swimming collegiately at Gannon University in Erie, PA. While at  CMSA he was awarded the Southeastern Swimming Age Group Coach of the Year in 2005 and selected to the Zone All-Star Coaching Staff in 2005 & 2006. After  CMSA, Sean coached for the Nashville Aquatic Club in Nashville, TN as the Senior Assistant. Sean got the opportunity to work with 6 of  NAC's Olympic Trials Qualifiers during that time. After NAC, Sean then coached for the Eagle Swim Team in Baltimore, MD. Beginning as the Head Age Group Coach his responsibilities expanded over those 7 years on EST to include taking over the Senior group as well as being named the Associate Head Coach of the Eagle Swim Team. Sean helped guide EST swimmers to three consecutive short course Sectional Championships in 2011, 2012, & 2013 for a total of 6 overall titles.  After EST he then took over the reins and became the Head Coach of the Weymouth Club Waves near Boston, MA.  In his two years with the Waves the team produced 2 USA Swimming Junior National Qualifiers, multiple Sectional qualifiers, and multiple New England champions while rewriting the Waves Team Record Book. 

In the past years that Sean has been the Head Coach of the BAC, the Stingrays have placed 2 swimmer's on the USA Swimming National Junior Team (Ethan Harder & Peter Thompson) with also a World Top 100 Ranking (Ethan Harder), produced 2 Olympic Trials Qualifers (Ethan Harder & Peter Thompson), 2 National Qualifiers (and a National Finalist), 6 Junior National Qualifiers (and 3 Individual Junior National Medalists), Futures Qualifiers, Sectional Qualifiers, Regional Qualifiers as well as Champions at each Championship Meet.  The BAC has rewritten the Team Recordbook with over (100+) records broken, as well as the Montana State Recordbook breaking over (30+) records and counting.  

BAC Team Championships
2017 SCY Men's Team Title
2017 LCM Overall Combined Team Title, Men's & Women's State Team Titles.
2018 SCY Overall Combined Team Title & Men's Team Title
2018 LCM Overall Combined Team Title, Men's & Women's State Team Titles.
2019 SCY
Overall Combined Team Title, Men's & Women's State Team Titles.
2019 LCM Overall Combined Team Title, Men's & Women's State Team Titles.

2020 SCY Overall Combined Team Title, Men's & Women's State Team Titles.

Sean was also awarded the Head Coach of the Year honor for the Montana Swimming LSC and selected to 4 consecutive (2017-2018, 2018-2019, 2019-2020, 2020-2021) USA Swimming National Junior Team Coach Rosters.

A number of the swimmers Sean has been able to coach have continued their swimming careers on athletic scholarships to various levels of collegiate swimming including but not limited to the following;  Arizona, Arizona State,  Bucknell, Columbia, George Mason, George Washington, Harvard, LSU, University of Mary, New York University, Penn, PITT, Providence, Richmond, Salisbury, Tennessee, Texas,  UMBC, Vanderbilt, William & Mary, Yale, Pacific University, Wesleyan University, Kenyon College, University of Wisconsin, University of Virginia, Seton Hall University, and University of South Carolina.

Jessica Marshall

Head Age Group Coach


Jessica is an ASCA Level 2 Coach (Level 3 educated) and began her coaching career in 2011 with Billings Aquatic Club assisting with the Senior Group. After moving to Minnesota in 2012 to continue coaching and teaching lessons she returned to Billings Aquatic Club in 2015. In 2016, Jessica took over the role as Head Age Group Coach for BAC and primarily coaches  our Silver, Bronze, and Junior Stingray Groups.  

During her coaching career, Jessica has helped swimmers achieve their goals and has coached State, Regional and Zones Qualifiers.  She has consistently produced Montana Relay & Individual State Champions for BAC as well as a number of Team Record Holders.   Coach Jessica was a 2018 Montana Sr Zones Coach & is the 2019 Montana Age Group Head Coach.  She has been an integral part of the coaching staff when BAC won their most recent State Championships;

Men's Short Course 2017 Championship Title
Men's, Women's, and Overall Long Course 2017 Championship Titles
Men's & Overall Short Course 2018 Championship Titles
Men's, Women's, and Overall Long Course 2018 Championship Titles
Men's, Women's, and Overall Short Course 2018 Championship Titles
Men's, Women's, and Overall Long Course 2019 Championship Titles

Men's, Women's, and Overall Short Course 2020 Championship Titles

*** Montana Swimming Age Group Coach of the Year for 2017-2018***
***Montana Swimming Age Group Coach of the Year for 2018-2019***

Olivia Claire Smith

Assistant Junior Stingray & Bronze Coach


Olivia graduated from Billings Central High school in the spring of 2017. During her four years at Central she swam competitively for the High School team and was able to be apart of the team when they won the class A title. Olivia started her competitive swimming career in the fall of 2010 when she joined the Billings Aquatic Club. During her time on BAC, she was able to participate on both long course and short course state teams as well as score points at each of those state meets.  Olivia was a part of the most recent state meet leading to BAC's Long Course State Championship Overall Team Trophy along with a Girls & Boys Team Championship Trophy.  Olivia is excited to give back to BAC and help build our team & culture from the bottom up as she will assist and coach the Junior Stingrays & Bronze Groups.

Morgan Witzel

Assistant Bronze and Jr Stingrays Coach


Morgan grew up swimming in Billings and has over 12 years of experience in the sport, as well as several years' experience in swimming instruction. In addition to club swimming, Morgan swam for Billings West High School and went on to swim for Boise State University during her undergraduate degree. Morgan will be helping with the Bronze and Jr. Stingrays Groups. A former Stingray, Morgan is excited to return to the pool as a coach and share her love of swimming with a new generation of Stingrays.  

Board of Directors

Rod Kimmet

Team President


Shawn Klies

Vice President


Calley Thompson



Jen Johnson



Laura Smith