What NERIS Requires for Multi-Unit Responses
When multiple units respond to an incident, NERIS requires documentation of each resource's involvement — apparatus type, actions taken, and whether mutual aid was provided to or received from other agencies. The aid given and aid received fields must reflect the actual operational picture, not just the primary unit.
For departments that regularly operate on working structure fires with mutual aid, or EMS incidents requiring ALS backup from a neighboring agency, the multi-unit documentation fields are populated frequently. Leaving them incomplete is a common source of MEI gaps.
Where Multi-Unit Records Go Wrong
Aid given and received fields left blank
Officers focus on their own unit's actions and omit mutual aid data, even when it was a significant part of the response.
Actions taken only reflect the first-arriving unit
Officers writing the report document what they did — not what the second-due engine or mutual aid company did.
Apparatus type mis-coded for non-standard units
Specialty apparatus codes in NERIS differ from NFIRS. Officers apply familiar codes that do not map correctly.
How Station Draft Helps
When an officer includes mutual aid in their narrative — “mutual aid from County Station 7 assisted with suppression” or “we provided ALS backup to Volunteer District 4” — Station Draft picks that up and flags the aid given/received fields with the appropriate data. Fields that were mentioned get High or Review flags. Fields that were not mentioned get Missing flags.
The officer sees which multi-unit fields are populated and which need attention before transferring to their RMS. This is more reliable than relying on memory at report-writing time.