ST. PETERSBURG, Fla. — A Gulf War Army veteran convicted of the shotgun slayings of his girlfriend and her three children has been scheduled for execution in Florida, the fourth death warrant signed this year by Gov. Ron DeSantis. Jeffrey Hutchinson, 59, is set to die by lethal injection May 1 at Florida State Prison near the city of Starke. DeSantis, a Republican, signed the death warrant Monday night. On the night of Sept. 11, 1998, in the panhandle town of Crestview, Florida, Hutchinson had