Mankato (KMKO)-June was a busy month for the Minnesota State Patrol in the Mankato area.  Troopers responded to 41 crashes in the 10 counties surrounding Mankato, 12 of them resulting in injuries.  Four people died in those collisions.  State Patrol Sgt. Jackie Sticha says one of the big mistake drivers make is following too close.  Troopers arrested 19 drivers for DWI in the Mankato area last month.