About Us

Firm Profile

Attorneys Michael Brisson and Dan Hynes

The New Hampshire DWI GUY devotes a substantial amount of his practice to DWI defense. From first time DWI alcohol and drug offenses, to subsequent offenses, to Aggravated DWI, chances are pretty good that Attorney Hynes has successfully handled a case similar to yours.

For more details on the services offered, please see Services Offered.

Specific DWI / DUI Trainings:

IACP/NHTSA Drug Recognition Expert (DRE) Course Overview. This Course fully explains the 12 steps that are supposed to be involved with a DRE investigates someone for driving under the influence of drugs.

Standardized Field Sobriety Testing Certification Student Course (NHTSA Course) -

This is the class that police take in order to be able to administer field sobriety tests.

Attorney Hynes passed this course with a score of 100% and is certified to administer FSTs.

Owner/ Operator of Alco Sensor FST PBT - This is the newest version of the portable breath test machine offered by Alco Sensor. It is used by many police departments throughout New Hampshire. By understanding, owning, and testing this machine, Attorney Hynes fully understands its accuracies and limitations.

Owner/ Operator of Intoxilyzer 5000EN- This is the breath machine presently in use throughout New Hampshire. If you were arrested for DWI and gave a breath sample at the police station, you used an intoxilyzer 5000. Attorney Hynes can use his intoxilyzer to go over with you exactly what the officer did, and had you do, so that he can fully evaluate whether the police properly obtained a breath sample from you.

Court Experience

Attorney Hynes has experience representing clients in numerous Courts throughout the state including:

Grafton Superior Court

Merrimack Superior Court

Hillsborough Superior Court

Rocking Superior Court


Claremont District Court

Conway District Court

Derry District Court

Dover District Court

Exeter District Court

Franklin District Court

Goffstown District Court

Hampton District Court

Henniker District Court

Hooksett District Court

Jaffrey/Peterborough District Court

Keene District Court

Laconia District Court

Lancaster District Court

Lebanon District Court

Manchester District Court

Merrimack District Court

Milford District Court

Nashua District Court

Plaistow District Court

Portsmouth District Court

Rochester District Court

Salem District Court


New Hampshire Department of Motor Vehicles (DMV)


New Hampshire Association for Criminal Defense Lawyers

Massachusetts Association of Trial Attorneys

Volunteer with the New Hampshire chapter of the ACLU

Attorney Hynes is Admitted to practice law in Massachusetts and New Hampshire.





Alco Sensor FST Portable Breath Test

Supervisor/Operator Certificate


dui trial cert

NHTSA Field Sobriety Testing Practioner