It was Damion Haywood’s 40th birthday and he had just been fired. So, incensed, police say he set his 79-year-old boss’ truck and house on fire. Now Haywood sits in the county jail charged with first-degree arson, dwelling/people present, and second-degree arson. Willie Irven, the boss, told police he fired Haywood at 11 a.m. Tuesday because the suspect always shows up to work “high,” an arrest report states. Irven said that Haywood — who turned 40 that day — mumbled something and walked off, the report shows.