Join the Johnston Police officers for "Breakfast with Santa" and "Coffee with a Cop" at your Johnston Hy-Vee, from 8:00 to 10:00 a.m. Join the Johnston Police officers for "Breakfast with Santa" and "Coffee with a Cop" at your Johnston Hy-Vee. Enjoy complimentary donuts, coffee, and juice. If you prefer a warm breakfast, you can purchase one from the Hy-Vee café.