Diversified Protection & Investigations LLC Investigation has years of experience and knowledge in conducting investigations and providing security. The company is led by a bi-lingual (Spanish) retired law enforcement officer of 31 years, who was sergeant of the detective unit during the last16 years of his law enforcement career. A sample of the credentials our investigators have include: interrogation and interview of child abuse, child sexual abuse, homicide investigations, narcotic investigations, forensics and advanced computer forensics, gang identification and awareness, crime scene analysis.