MANKATO September 11, 2012 (KMKO)- A photo of the Blue Angels at the recent air show took first place in Mankato’s 2013 calendar photo contest. A.J. Dahm was announced as the winner during last night's city council meeting. The city of Mankato has published a calendar for 43 years. A People’s Choice award can be voted on the city’s website through September 21st.