public safety. For instance, they may operate a truck with satellite uplink, computers, telephone, and power generation at a staging area near a disaster so that the responders can communicate with the outside world. There are also Mobile Air Transportable Telecommunications System (MATTS) assets which can be airlifted in. Also, portable cell phone towers can be erected to allow local responders to access telephone systems. The first test of the national wireless emergency system by FEMA was broadcast to an estimated 225 million electronic devices at 14:18 EDT on October 3, 2018. The text message was accompanied by a flashing warning sign and warning tone. The president may direct FEMA to broadcast such alerts only for national emergencies or if the public is in danger. The facility may not be used for personal messages from the president. Mobile phone owners can not opt out of these warnings. Preparedness for nuclear incidents On August 1, 2008, FEMA released "Planning Guidance for Protection and Recovery Following Radiological Dispersal Device (RDD) and Improvised Nuclear Device (IND) incidents", which provide an action guide in the case of radioactive contamination. This guidance is specified as action guide for Radiological Dispersal Devices (RDD) and Improvised Nuclear Devices (IND) involving high levels of radiation. According to the Federation of American Scientists, during the Cold War FEMA prepared assessments of the likely consequences of a full-scale Soviet nuclear attack on the United States for use in planning mitigation and recovery efforts. FEMA also prepared plans for evacuating major U.S. cities in response to a nuclear war, dubbed CRP-2B. Training FEMA offers a large number of training classes, either at its own centers, through programs at the state level, in cooperation with colleges and universities, or online. The latter are free classes available to anyone, although only those with U.S. residency or work eligibility can take the final examinations. More information is available on the FEMA website under the "Emergency Personnel" and "Training" subheadings. Other emergency response information for citizens is also available at its website. FEMA runs the Incident Workforce Academy, a two-week emergency preparedness training program for FEMA employees. The first class of the academy graduated in early 2014. The Training and Education Division within FEMA's National Integration Center directly funds training for responders and provides guidance on training-related expenditures under FEMA's grant programs. Information on designing effective training for first responders is available from the Training