Jackson High swimmer Nate Thomas trains at Central Municipal Pool

Jackson High School incoming freshman swimmer Nate Thomas rests between practice starts as he trains at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas rests between practice starts as he trains at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas works on his backstroke start as he trains at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas works on his backstroke start as he trains at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas works on his backstroke start as he trains at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas works on his backstroke start as he trains at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas rests between sets as he trains at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas rests between sets as he trains at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas trains on his backstroke at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas (right) trains on his backstroke in the lane next to his younger brother, Ty Thomas, at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Jackson High School incoming freshman swimmer Nate Thomas trains at the Central Municipal Pool on Tuesday in preparation for this weekend's Central Age Group Zone Championships in Indiana.  (Tom Davis ~ Tdavis@semoball.com)

Five swimmers from the Cape Girardeau-based River City Aquatics have qualified for this weekend's Central Zone Age Group Championships in Elkhart, Ind. The group recently posed at the Central Municipal Pool and include (from left) Ty Thomas, Sydney Ringwald, Nate Thomas, Ava Walters, and Hudson Dennis. (Submitted photo)