Final answer:
The second step in identifying suspicious mail is assessing changes in the mail's characteristics. A broader impact includes how shifts in consumer preferences from snail mail to digital communication affect the demand for the postal service, thereby influencing operations and mail safety screening.
Step-by-step explanation:
Identifying the Impact on Postal Service demand
When identifying suspicious mail, the second step after detection often involves assessing if the characteristics of the mail have changed. However, if we look at the broader impact of changes within the postal system, one significant factor is how a shift in consumer behavior affects the USPS. For instance, when consumer preferences move away from traditional snail mail towards digital communication methods, there is a resultant change in the demand for the postal service. Such a change in tastes and adaptation to technology affects how much physical mail is sent and received, thus influencing the USPS's operations, financial health, and potentially the volume of mail that needs to be screened for safety concerns, including potential bioterrorism.