The NHC and HPC are essential to one another, especially in that the HPC routinely executes service backup for the NHC. An example of this is when the HPC conducted a respective amount of drills for service backup in the summer months leading up to Katrina. During Hurricane Katrina's landfall, the NHC's implementation and execution of policies was seen as excellent by many government emergency officials. Throughout the tracking of Hurricane Katrina, the NHC's forecasts were very consistent and provided strong evidence for the intensity and power of the storm. Not only were the forecasts made by the NHC accurate, but they were also timely, which allowed for workforce management operation members to in turn provide accurate information to their counterparts. As well as the accuracy and timeliness of the NHC's forecast, it was precisely expected that Hurricane Katrina would be a massive hurricane that caused detrimental effects to the northern Gulf coast.