在本周末的“J6正义”集会之前，美国国会大厦外的围栏在周三晚些时候被重新安装。
1月6日暴乱后竖起的围栏在七月被移除。
“J6的正义”被组织者宣传为对因1月份国会大厦暴动而被政府拘留的被告的抗议。
围栏只是一个集会的最新安全措施，该集会有一些执法方面的内容高度戒备。
联邦执法机构变得关心包括“誓言守护者”和“骄傲男孩”在内的极右翼极端分子可能会来华盛顿抗议。
美国国会大厦警方是这次活动的主要机构。
“我们正在密切关注9月18日的情况，我们正在相应地进行规划，”国会大厦警察局局长汤姆·马槽说。“1月6日之后，我们对内部和外部收集和共享情报的方式进行了全部门范围的变革。我相信，我们现在正在做的工作将确保我们的官员拥有他们所需要的东西，以确保每个人的安全。”
每一名可用的国会警察都将工作，华盛顿大都会警察局表示，他们也为抗议“做好了充分准备”。
“和所有第一修正案示威一样，MPD将与我们的联邦执法合作伙伴一起监控和评估活动并进行相应的规划，”MPD发言人在给ABC新闻的一份声明中说。“为了公共安全，MPD将在示威活动发生的城市周围增加存在，并将准备关闭街道。”
undefined更多:1月6日暴乱后，国会大厦周围的金属围栏正在倒塌
此外，联邦调查局华盛顿办事处表示，他们正与州地方和联邦合作伙伴密切合作。
国家安全委员会前国家反恐主任贾韦德·阿里说，各机构有理由感到担忧。
阿里说:“虽然政府还没有发布关于当天具体和可信阴谋的威胁公告，但像1月6日这样，可能会有人以高度焦虑的心态参加，然后在几乎没有警告的情况下迅速转向暴力行动。
国土安全部部长亚历杭德罗·马约尔卡斯上周告诉记者，信息共享是避免类似1月6日事件的关键。
他说，国土安全部在全国范围内加大了信息共享力度。
Fence goes up around US Capitol, as law enforcement braces for Sept. 18 protest
Fencing outside the U.S. Capitol was reinstalled late Wednesday ahead of the "Justice for J6" rally this weekend.
The fencing erected after the Jan. 6 riotwas removed in July.
"Justice for J6" is being billed by organizers as a protest for defendants who are being detained by the government in connection to the January insurrection at the Capitol.
The fencing is just the latest security measure for a rally that has some in law enforcementon high alert.
undefinedMORE: Man arrested with weapons near DNC headquarters: US Capitol Police
Federal law enforcement agencieshave become concernedthat far-right extremists, including the Oath Keepers and Proud Boys could come to Washington for the protest.
U.S. Capitol Police is the leading agency for the event.
"We are closely monitoring Sept. 18 and we are planning accordingly," said Capitol Police Chief Tom Manger. "After Jan. 6, we made department-wide changes to the way we gather and share intelligence internally and externally. I am confident the work we are doing now will make sure our officers have what they need to keep everyone safe."
Every available Capitol Police officer will be working and the Washington Metropolitan Police Department said they are also "fully prepared" for the protest.
"As with all First Amendment demonstrations, MPD will be monitoring and assessing the activities and planning accordingly with our federal law enforcement partners," an MPD spokesperson said in a statement to ABC News. "MPD will have an increased presence around the city where demonstrations will be taking place and will be prepared to make street closures for public safety."
Additionally, the FBI Washington Field Office said they are working closely with state local and federal partners.
Javed Ali, a former national counterterrorism director on the National Security Council said agencies have cause for concern.
"While the government has not yet issued threat bulletins about specific and credible plots on that day, like 6 January there may be people who attend in a highly agitated mindset and then switch quickly to violent action with little-to-no warning," Ali said.
Homeland Security Secretary Alejandro Mayorkas told reporters last week that information sharing is key to avoiding another incident like Jan. 6.
He said the Department of Homeland Security has increased information sharing efforts throughout the country.
