nicholas pence , 25 , and his father david , an oil company manager , had been celebrating a victorious football game in their garage in new orleans , louisiana , on wednesday .
but moments after jovially waving goodbye to the last-remaining revelers shortly before midnight , they were both shot dead at close range in an attack that shocked and baffled the quiet community of metairie .
they were found by david 's wife , nicholas 's mother , who had been in a bedroom when she heard gun shots .