Oshkosh Defense reported a near 14% uptick in sales for this year’s third quarter despite dropping off in Joint Light Tactical Vehicle deliveries, senior officials reported during an earnings call Wednesday. They chalked up the boost mostly to low-rate production of a new delivery truck for the United States Postal Service, along with sales increases for its heavy and medium tactical vehicles and aftermarket parts. The Wisconsin-based vendor won an indefinite delivery, indefinite quantity contract in February 2021 to build...