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| ABS | Asbestos |
| ACC | Accident /Accident Reconstruction |
| ADP | Adoption |
| AGR | Agriculture |
| ANI | Animal |
| ARS | Arson |
| ART | Armored Transport |
| AVI | Aviation |
| BIL | Bi-lingul |
| BKG | Background |
| BOA | Boating |
| CIV | Civil |
| COM | Computer Forensics |
| COR | Corporate |
| CRM | Criminal Defense |
| CUS | Child Custody |
| DDR | Drunk Driving Revocation |
| DOC | Documents |
| DOM | Domestic |
| DUE | Due Diligence |
| ENV | Environmental |
| EQP-SUR | Surveillance Equipment |
| EXP | Executive Protection |
| F-PRT | Fingerprinting services |
| FIR | Fire |
| FRD | Fraud |
| IDT | Identity Theft |
| INF | Information Broker |
| INS | Insurance |
| INT | Interviewing/Interrogation |
| K9 | Canine |
| LPV | Loss Prevention |
| MAL | Malpractice |
| MED | Medical |
| MIS | Missing Person |
| PAR | Paralegal |
| PIN | Personal Injury |
| POL | Polygraph |
| PPI | Private Presentence |
| PPS | Process Service |
| PRD | Product Liability |
| REC | Record Searching |
| REP | Repossession |
| SEC | Security |
| SKP | Skiptrace |
| STM | Statement Taking |
| SUR | Survelliance |
| THF | Theft |
| TRN | Training |
| TSCM | Technical Surveillance Countermeasures |
| TTL | Titles |
| UND | Undercover |
| UNP | Unemployment |
| WKM | Workmans Comp. |
|