One key important factor everyone must bear in mind is that people lose emergency skills quickly unless they are refreshed and repeated at regular intervals. This is true for first aid, CPR, or even AED use. When the goal is readiness to save lives, it is essential that employees engage in regular training where the core principles of basic training are continually repeated and revisited. CPR skills begin to decline as soon as two weeks after training, rendering 87 percent of trained employees ineffective at CPR within six months of certification, according to research from The Journal of Acute and Critical Care and BMJ.