When the Pacific War began, discrimination against Japanese Canadians increased. Following the attack on Pearl Harbor in December 1941, Japanese Canadians were categorized as enemy aliens under the "War Measures Act", which began to remove their personal rights. Starting on December 8, 1941, 1,200 Japanese-Canadian-owned fishing vessels were impounded as a "defence measure." On January 14, 1942, the federal government issued an order calling for the removal of male Japanese nationals between 18 and 45 years of age from a designated protected area of 100 miles inland from the British Columbia coast. The federal government also enacted a ban against Japanese-Canadian fishing during the war, banned shortwave radios, and controlled the sale of gasoline and dynamite to Japanese Canadians. Japanese nationals removed from the coast after the January 14 order were sent to road camps around Jasper, Alberta.