P. Casey Coble
Head Coach, Senior Coach

Casey is an alumnus of LAC who has returned to coach the team. As Head Coach, he oversees the entire LAC competitive swim program, working directly with the Senior and Senior Prep training groups. Casey came on as an assistant at LAC in 2005 before being named the Head Coach in 2008. As an assistant coach, Casey helped LAC develop its Age Group swimmers into successful Senior level swimmers. His swimmers broke multiple team records, qualified for the Eastern Zone All-Star teams, were Junior Olympic Champions, and placed top 16 in the country. Also, in the summer of 2007, Casey helped coach the 13-14 girls to a team championship at Junior Olympics.

In the time since Casey has taken over as the Head Coach of LAC, the team has broken over 70 team records including multiple relay records. LAC boys have won Sectionals twice and finished top 5 four times. LAC girls finished top 5 three different times. He has also coached a 4x PIAA state record-breaker, 4 PIAA champions, and LAC swimmer have won 11 PIAA titles. He coached multiple individual Sectional Champions and relay Championships, a USA Summer Junior National finalist, 8 individual USA Summer Junior National qualifiers, 2 National Select Camp qualifiers, a USA Swimming Diversity Select Camp qualifier, a member of the USA Swimming National Youth Team and Jr. Pan Pac team, and 2 Olympic Trial qualifiers. Casey served as an assistant coach for the 2012 USA Swimming National Select Camp at the Olympic Training Center in Colorado Springs. Casey is currently the Middle Atlantic coaches has also served as the MA coaches rep from 2010-2013.

Before coaching at LAC, Casey was the assistant coach for Durham Academy in Durham, NC from 2004-2005.

As a swimmer at LAC, Casey was a 3 time Jr National Champion, qualified and swam both the 200 and 400IM at the 2000 Olympic Trials and placed 20th in the 200IM at the 2001 Summer Nationals. Casey still holds several LAC team records. A graduate of North Carolina where he attended on a swimming scholarship, Casey was a 6 time ACC individual finalist and 5 time ACC individual Consolation finalist. His 200IM time ranked 10th fastest all-time in UNC swimming history upon graduation.

Margaret Kieffer
Coach/Director of Staff Development

Margaret is excited for another season with LAC. Margaret hails from Delaware County where she attended Cardinal O'Hara High School and Widener University. Having swum at both the high school and collegiate levels, Margaret decided to share her love of swimming and has now coached for over 20 years. She has coached all levels of swimming from lessons through college. Margaret loves learning and sharing about swimming with everyone, and can't wait to share it with you. 

Mike Nedrow
Assistant Coach


Coach Mike swam with Lancaster Aquatic Club back when the team was the only US Swim Club in south central Pennsylvania.  He graduated from Elizabethtown High School before they had a swim team and is a four year varsity veteran of Cornell University [D1/Ivy League].  In the early 1980s, Mike held all the Mid-Penn Summer Swim League individual and relay records at E-town’s Willowood Swim Club [except breaststroke, which his brother held].  He specialized in 100/200 backstroke at Cornell and often led the 4x100 freestyle relay.

Swimming is a welcome distraction from Mike’s day job as a tech industry global executive.  Mike and his wife Kelly raised 4 children [including triplets] in the Conestoga Valley School District.  All four learned to swim.  One daughter, Lauren still swims competitively and is the Past President for the University of Pittsburgh Club Swim Team.  Mike and his family moved to Lancaster from Canada and joined the Leola Swim club in 2008, where Mike began volunteering as a stroke and turn judge.  He is now certified at the Starter level with US Swimming, and often officiates local NCAA, PIAA and Lancaster Summer League swim meets.  Mike has a long history of volunteer experience with youth through Scouts Canada and the Boy Scouts of America.  He is currently the Associate Advisor for Venture Crew 42 [co-ed] and Assistant Scoutmaster for Troop 82 [Girls/Brownstown] and Troop 83 [Boys/Leola].  Mike’s understanding of the swimming rules [as an official] as well as his personal swimming experience [as an athlete] will be valuable tools to assist swimmers with stroke development and a competitive mindset.

Samantha Zahm
Assistant Coach

Coach Sam is returning as an Assistant Coach with Lancaster Aquatics Club.  Sam started swimming at a young age for York YMCA and Wildcat Swim Club.  A 2010 graduate of Dallastown Area High School, Sam swam all four years and continued her swimming career at the University of Pittsburgh at Bradford leading the team as a co-captain for three years and a school record holder.  Sam holds a BS in Sports Medicine/Exercise Science and a MPH from The George Washington University. 

Zack Bennett
Assistant Coach

Zack is entering his first full season of coaching with LAC. He grew up in Lancaster, and attended Hempfield High School. At Hempfield School District he swam all four years and ran cross country for a year. From a young age he swam for the Diplomat Swim Club and after graduating from high school continued his swimming career in the PSAC conference at Edinboro University where he studied Exercise Science. He has eight years of experience teaching swim lessons and is very excited to start his first full year working with LAC!


After seven years working for the Ocean City, Maryland Beach Patrol, he recently moved back to Lancaster and has started a job at Hershey Chocolate Company as a Health and Fitness Specialist. In his free time, Zack enjoys creating art and spending time in nature.

J.D. Abercrombie
Assistant Coach


J.D. grew up in Boise, Idaho, swimming for the Boise YMCA, where he still holds team and LSC records. He attended high school in Monterey, CA where he held 6 school and league records, was MVP 3 straight seasons, and team captain. In college at the University of Southern California under 6-time Olympic coach Mark Schubert, he was a 3-time NCAA All-American, and won the 200 yard butterfly at PAC-10 championships. As a member of the US National Team, he won a bronze medal at the 2003 World University Games. After training in Texas with coach Randy Reese, at the 2004 Olympic Trials he finished 5th in the 200m butterfly, and 6th in the 100m butterfly (also qualifying for Trials in the 100m breast and 200m IM). After retiring from swimming, he taught sailing and managed a yacht charter company in Redondo Beach, CA, before moving to Pennsylvania and returning to the pool.

Colin Anderson
Assistant Coach

Colin is a Lancaster native, growing up in West Lampeter. He swam for the L-S YMCA summer team, the L-S high school team, and LAC. After graduating high school, he attended Loyola University Maryland, where he swam all four years for its Division One team. Colin is now back in Lancaster attending Millersville University to work on a Master’s degree in education and become certified as a math teacher.

Colin has years of coaching experience for the L-S YMCA summer swim team and has even coached for LAC in the past. When he isn’t at school or coaching, you can probably find him trying to convince himself to train for a triathlon. He’s super excited to be back working with LAC!

Sam Lopez
Assistant Coach

Sam is entering his first year as an Assistant Coach with LAC. Sam is from Bel Air, Maryland, where he swam for Arena Club Aquatics and Loyola Blakefield Aquatics. He continued his swimming career at Elizabethtown College leading the team as a co-captain for his senior year. Before joining LAC, Sam was the head coach of the Fallston Fins, leading the team from a 2-6  record his first year to a 7-2 record his final year. Outside of LAC, Sam is a biology teacher at Donegal High School and is certified to teach Lifeguard and CPR classes.

Maggie Slater
Dryland Coach

Maggie Slater is a certified CrossFit L1, CrossFit Kids trainer, ACE Certified Personal Trainer, Strength and Conditioning trainer and Fit Mom trainer. Maggie is passionate about the health and fitness of her clients.
Her own journey serves as her inspiration to help others achieve all they can in getting the peace of mind and spirit that comes with a strong body.
Maggie’s coaching style embraces fun and challenge - and this is what keeps clients engaged and gets them to their goals.
Maggie has a diverse background that ranges from ballroom dancing, Krav Maga, 5k, CrossFit competitions and Spartan races. Her CrossFit and Personal Training certifications are a result of combining her drive to excel with her desire to help others succeed . Her academic certification is in Early Childhood Education, which made the CrossFit Kids certification a natural complement to her other skills.
Maggie is CPR/First Aid and Stop the Bleed  certified,  and is a Red Cross blood drive coordinator.

Maggie was also nominated for Woman of the Year for the leukemia and lymphoma  society.