The Regional Office (RO) sent a Veterans Claims Assistance Act of 2000 (VCAA) letter to Veteran A, which had attached another VCAA letter for Veteran B. Veteran B's name and full SSN were compromised.  This is informational for Mis-Mailed incidents and is the representative ticket. There were a total of 143 Mis-Mailed incidents this reporting period. Because of repetition, the other 142 are not included in this report, but are included in the "Mis-Mailed Incidents" count at the end of this report. In all incidents, Veterans will receive a notification letter and/or credit monitoring will be offered if appropriate.;