Two cousins who admitted starting the largest wildfire in Arizona history were sentenced Wednesday to spend a weekend in jail and perform 200 hours of community service.

Caleb and David Malboeuf also will each be on supervised probation for five years. The Malboeufs were camping in eastern Arizona's Apache Sitgreaves National Forest in May 2011 when their campfire spread outside its rings, sparking the Wallow Fire. The blaze burned more than 538,000 acres, or about 840 square miles, in Arizona and parts of western New Mexico before it was contained.

The cousins pleaded guilty in March to misdemeanor charges of building a campfire without clearing flammable material and leaving it unattended.

A tearful David Malboeuf took the blame for lighting the campfire, saying he thought he had taken necessary precautions to put it out but recognized the mistake was in not dousing it with water.

"I remember that I was wrong, whether I have a meeting with a probation officer or not, whether my heartbeat increases with the thought of running for my life or the slow death of the dog I loved.