A seat arrangement for a vehicle includes a first row of seats, a second row of seats mounted behind the first row of seats in a vehicular cabin, and a third row of seats mounted behind the second row of seats in the cabin. In the method, at least one partial via is etched in a stacked structure and a border is formed about the at least one partial via. The downhole controller then observes a voltage decay across the antenna after the calibration pulse. The ballast element includes at least a monolithic body coaxially disposed in the main hollow body of the inactive ballistic element and extending at least between the ogive and the closure bottom.