The chief procurement officer often ensures that goods and services are promptly delivered. They may be responsible for making sure vendors are paid in a timely manner. A CPO's focus generally is on supply management, whether it is in an office, manufacturing, or retail setting.
MRT.exe is the Windows Malicious Software Removal Tool. It scans for malicious files like viruses in the background and is updating itself every patch day (second Tuesday in a month).
WWAHost.exe is a safe and essential process in Windows 8. It acts as a host for Metro app processes similar to how svchost.exe acts as a host for .dll files. This process is safe and is best left alone to continue normal function on a Windows 8 system.