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Lt. Joan Krupsky is a nurse in the Navy Reserve. She is preparing to leave the Reserves after an eight-year career that began with the Navy\'s Direct Commission Program.

She joined the Navy Reserve for adventure. Her experience exposed her to the humble sacrifices of fellow servicemembers wounded in combat. Her duty gave her an understanding of the importance of simply being fully prepared.

In this episode of "When Sacrifice Calls," host Lesley Lykins and Lt. Joan Krupsky discuss the vulnerability built into military service and how that vulnerability leads to uncomparable bonds of friendship.