几个美剧中的句子和短语不明白，求高手解答

句子来自丑闻第四季
1. Sources at James Madison hospital suggesting this stroke could be related to injuries...
这句话为什么用suggesting而不是suggested? suggest做动词后面接从句
2.special ops go team字幕是特种部队的行动，go team是什么
3. rendered mute什么意思
有人帮忙解答我再继续问吧