Whatâs Going on Between North and South Korea. Tensions are rising again on the Korean peninsula after North and South Korea briefly exchanged heavy-arms fire in an escalation of confrontation. Hereâs what to know about whatâs going on this time around.
Systems Engineering and Technical Assistance. Systems Engineering and Technical Assistance (SETA) contractors are civilian employees or government contractors who are contracted to assist the United States Department of Defense (DoD) components, and acquisition programs.
What is PSA? PSA is one of three major factors that are considered when evaluating a manâs particular case of prostate cancer. PSA stands for Prostate Specific Antigen. The word âspecificâ means that this enzyme is produced only by prostate cellsâwhether normal prostate cells or prostate cancer cells. No other cells (lung, intestine, liver, etc.) make PSA. The purpose of PSA is to keep semen (the white substance ejaculated during sexual intercourse) liquefied.