Homeland Security Article Updated: Leave a comment Share on FacebookTweet this! Homeland Security secretary says Dallas gunman acted alone Related Articles You may also be interested in Holiday guide to Costa Rica Costa Rica is perhaps the best in Latin America for a tropical adventure, thanks to its misty jungles and incredible wildlife. Follow up from the press conference Holding a press conference is a simple, effective way to communicate your message with the media. Holding a press conference is a simple, effective way to communicate your message with the media.