People living in 21 Wisconsin counties are being informed about increased aircraft activity starting next Monday.  The Volk Field Combat Readiness Training Center will be home for 60 aircraft and more than one-thousand personnel from active-duty Air Force, National Guard, Marine and Navy units until August 24th.  The annual Northern Lightning Counterland training exercise will have planes in the air from 9:30 A-M to 5:00 P-M most days.  Participants are coming from as far away as Washington state and several international partners will be present to observe.