Rumbling motorcycles will be heading into Aldergrove on Saturday, Aug. 22, as the Rolling Barrage’s cross-Canada ride makes its final stop at the local legion, which will be welcoming about 170 riders. As their 22-day journey through 10 provinces, starting from St. John’s, Nfld., comes to an end, the Rolling Barrage Foundation raises awareness about post-traumatic stress and fundraises for programs supporting Canadian Armed Forces members and fi…