Recruiting Station Des Moines Recruiter Sgt. Karl Krebsbach visits with Kennedy Feller, 12, while escorting Navy Blue Angel Flight Surgeon Lt. Johannah Valentine at the Children’s Hospital & Medical Center Aug. 28 in Omaha, Neb. Krebsbach feels a personal connection with the hospital because his three-year-old son receives treatment there for a heart condition. - Recruiting Station Des Moines Recruiter Sgt. Karl Krebsbach visits with Kennedy Feller, 12, while escorting Navy Blue Angel Flight Surgeon Lt. Johannah Valentine at the Children’s Hospital & Medical Center Aug. 28 in Omaha, Neb. Krebsbach feels a personal connection with the hospital because his three-year-old son receives treatment there for a heart condition.