Amid rising concerns that Chinese-made giant cargo cranes found at U.S. ports could be a security concern are new reports that communications devices have been found within the mammoth cranes. A report in the Wall Street Journal, citing congressional aides and documents, said cellular modems have been found that could be remotely accessed. The finding is potentially serious, because ZPMC, a China-based manufacturer, has made about 80 percent of the cranes that unload ships at U.S. ports. China “is looking for every opportunity to collect valuable intelligence and position themselves to exploit vulnerabilities by systematically burrowing into America’s critical infrastructure,...